]> matita.cs.unibo.it Git - helm.git/blobdiff - helm/www/lambdadelta/basic_2.html
\lambda\delta web site update for git
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-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en-us">
-  <head>
-    <meta http-equiv="Content-Language" content="en-us" />
-    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
-    <meta http-equiv="Content-Style-Type" content="text/css" />
-    <meta name="author" content="Ferruccio Guidi" />
-    <meta name="description" content="\lambda\delta home page" />
-    <title>\lambda\delta home page</title>
-    <link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/ld_web.css" />
-    <link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/lddl.css" />
-    <link rel="stylesheet" type="text/css" href="http://lambdadelta.info/css/xhtbl.css" />
-    <link rel="shortcut icon" href="http://lambdadelta.info/images/crux_16.ico" />
-  </head>
-  <body lang="en-US">
-    <div class="spacer">
-      <a href="http://lambdadelta.info/">
-        <img class="icon32" alt="[\lambda\delta home]" title="\lambda\delta home" src="http://lambdadelta.info/images/crux_32.png" />
-      </a>
-    </div>
-    <div class="head1">cic:/matita/lambdadelta/basic_2/ (core λδ version 2)</div>
-    <div class="spacer">
-      <img class="rule" alt="[Spacer]" title="\lambda\delta rainbow rule" src="http://lambdadelta.info/images/rainbow.png" />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="spacer">
-      <br />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      <table cellpadding="4" cellspacing="0">
-        <tbody>
-          <tr>
-            <td class="snns capitalize italic sky">
-              <a href="http://lambdadelta.info/home.html">home</a>
-            </td>
-            <td class="snns capitalize italic magenta">
-              <a href="http://lambdadelta.info/news.html">news</a>
-            </td>
-            <td class="snns capitalize italic white">
-              <a href="http://lambdadelta.info/specification.html">specification</a>
-            </td>
-            <td class="snnn capitalize italic white">
-              <br />
-            </td>
-            <td class="snnn capitalize italic white">
-              <br />
-            </td>
-            <td class="snns capitalize italic orange">
-              <a href="http://lambdadelta.info/documentation.html">documentation</a>
-            </td>
-            <td class="snns capitalize italic green">
-              <a href="http://lambdadelta.info/implementation.html">implementation</a>
-            </td>
-            <td class="ssnn capitalize italic green">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="snns capitalize sky">
-              <a href="http://lambdadelta.info/home.html#foreword">foreword</a>
-            </td>
-            <td class="snns capitalize magenta">
-              <a href="http://lambdadelta.info/news.html#milestones">milestones</a>
-            </td>
-            <td class="snns capitalize white">
-              <a href="http://lambdadelta.info/specification.html#v2">version 2</a>
-            </td>
-            <td class="snnn capitalize white">(<a href="http://lambdadelta.info/ground_2.html">background</a> - <a href="http://lambdadelta.info/basic_2.html">core</a> - <a href="http://lambdadelta.info/apps_2.html">applications</a>)</td>
-            <td class="snnn capitalize white">
-              <br />
-            </td>
-            <td class="snns capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v2">version 2</a>
-            </td>
-            <td class="snns capitalize green">
-              <a href="http://lambdadelta.info/implementation.html#helena">helena</a>
-            </td>
-            <td class="ssnn capitalize green">
-              <a href="http://lambdadelta.info/osn/">Open Symbolic Notation (OSN)</a>
-            </td>
-          </tr>
-          <tr>
-            <td class="snss capitalize sky">
-              <a href="http://lambdadelta.info/home.html#citations">citations</a>
-            </td>
-            <td class="snss capitalize magenta">
-              <a href="http://lambdadelta.info/news.html#visibility">visibility</a>
-            </td>
-            <td class="snss capitalize white">
-              <a href="http://lambdadelta.info/specification.html#v1">version 1</a>
-            </td>
-            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/ground_1.html">background</a> - <a href="http://lambdadelta.info/basic_1.html">core</a>)</td>
-            <td class="snsn capitalize white">(<a href="http://lambdadelta.info/static/matita/lambdadelta/">static HELM directory</a>)</td>
-            <td class="snss capitalize orange">
-              <a href="http://lambdadelta.info/documentation.html#v1">version 1</a>
-            </td>
-            <td class="snss capitalize green">
-              <a href="http://lambdadelta.info/implementation.html#lddl">library</a>
-            </td>
-            <td class="sssn capitalize green">(<a href="http://lambdadelta.info/static/lddl/">static LDDL directory</a>)</td>
-          </tr>
-        </tbody>
-      </table>
-    </div>
-    <!--   
-   <section>System's Syntax and Behavior</section>
-   <body>This is a summary of the "block structure"
-         of the System's syntactic items and reductions.
-   </body>
-   <table name="basic_2_blk"/>
-   <body>* In terms only.
-         ** In terms and local environments only.
-         *** In global environments only.
-         **** Sort level k in terms only.
-   </body>
--->
-    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="summary">Summary of the Specification <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b4.png" />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">Here is a numerical account of the specification's contents
-         and its timeline.
-   </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      <table cellpadding="4" cellspacing="0">
-        <tbody>
-          <tr>
-            <td class="snns capitalize italic gray">category</td>
-            <td class="snns italic gray">units</td>
-            <td class="snnn right italic gray">
-              <br />
-            </td>
-            <td class="snnn italic gray">
-              <br />
-            </td>
-            <td class="snnn right italic gray">
-              <br />
-            </td>
-            <td class="snnn italic gray">
-              <br />
-            </td>
-            <td class="ssnn right italic gray">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="snns capitalize italic water">sizes</td>
-            <td class="snns italic water">characters (files)</td>
-            <td class="snnn right italic water">315581 (309)</td>
-            <td class="snns italic water">nodes (objects)</td>
-            <td class="snnn right italic water">1458870 (1431)</td>
-            <td class="snns italic water">intrinsic loss factor</td>
-            <td class="ssnn right italic water">4.6</td>
-          </tr>
-          <tr>
-            <td class="snns capitalize italic green">propositions</td>
-            <td class="snns italic green">theorems</td>
-            <td class="snnn right italic green">92</td>
-            <td class="snns italic green">lemmas</td>
-            <td class="snnn right italic green">1085</td>
-            <td class="snns italic green">total</td>
-            <td class="ssnn right italic green">1177</td>
-          </tr>
-          <tr>
-            <td class="snss capitalize italic grass">concepts</td>
-            <td class="snss italic grass">declared</td>
-            <td class="snsn right italic grass">34</td>
-            <td class="snss italic grass">defined</td>
-            <td class="snsn right italic grass">93</td>
-            <td class="snss italic grass">total</td>
-            <td class="sssn right italic grass">127</td>
-          </tr>
-        </tbody>
-      </table>
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="B">Stage "B"</div>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">Ongoing.</span>
-         Context-sensitive subject equivalence
-         for native type assignment.
-   </li>
-    </ul>
-    <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="A2">Stage "A2": "Extending the Applicability Condition"</div>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2017 October 17.</span>
-         Exclusion binder in local environments.
-         Syntactic component updated:
-         syntax, relocation, s_transition, s_computation, static, i_static.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2017 April 16.</span>
-         Strong rt-normalization
-         for simply typed terms
-         (anniversary milestone).
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2017 March 16.</span>
-         First behavioral component reconstructed:
-         rt_transition.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2017 February 19.</span>
-         Generic candidates of reducibility.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2017 January 17.</span>
-         Confluence for parallel r-transition on referred entries of local environments.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2016 September 15.</span>
-         Confluence for context-sensitive parallel r-transition on terms.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2016 April 16.</span>
-         Syntactic component reconstructed:
-         syntax, relocation, s_transition, s_computation, static
-         (anniversary milestone).
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2016 March 25.</span>
-         Relocation with reference transforming maps (rtmap).
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2015 October 9.</span>
-         λδ version 2A2 is started.
-   </li>
-    </ul>
-    <div xmlns:ld="http://lambdadelta.info/" class="head3sn" id="A1">Stage "A1": "Extending the Applicability Condition"</div>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph delta">2015 August 27.</span>
-         λδ version 2A1 appears too complex and is dismissed.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph gamma">2014 October 28.</span>
-         λδ version 2A1 is released.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph beta">2014 September 9.</span>
-         Iterated static type assignment defined (more elegantly)
-         as a primitive notion.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph beta">2014 June 18.</span>
-         Preservation of stratified native validity
-         for context-sensitive computation on terms.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2014 June 9.</span>
-         Strong qrst-normalization
-         for simply typed terms.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2014 April 16.</span>
-         Lazy equivalence on local environments
-        added as q-step to rst-computation on closures
-         (anniversary milestone).
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2014 January 20.</span>
-         Parametrized slicing on local environments
-        comprises both versions of this operation
-        (one from basic_1, the other used in basic_2 till now).
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2013 August 7.</span>
-         Passive support for global environments.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2013 July 27.</span>
-         Reaxiomatized β-reductum as in rt-reduction.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2013 July 20.</span>
-         Context-sensitive strong rt-normalization
-         for simply typed terms.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2013 April 16.</span>
-         Reaxiomatized substitution and reduction
-         commute with respect to subclosure
-         (anniversary milestone).
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2013 March 16.</span>
-         Mutual recursive preservation of stratified native validity
-         for rst-computation on closures.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2012 October 16.</span>
-         Confluence for context-free parallel reduction on closures.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2012 July 26.</span>
-         Term binders polarized to control ζ-reduction (not released).
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2012 April 16.</span>
-         Context-sensitive subject equivalence
-         for atomic arity assignment
-         (anniversary milestone).
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2012 March 15.</span>
-         Context-sensitive strong normalization
-         for simply typed terms.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2012 January 27.</span>
-         Generic candidates of reducibility.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2011 September 21.</span>
-         Confluence for context-sensitive parallel reduction on terms.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2011 September 6.</span>
-         Confluence for context-free parallel reduction on terms.
-   </li>
-    </ul>
-    <ul xmlns:ld="http://lambdadelta.info/">
-      <li>
-        <span class="emph alpha">2011 April 17.</span>
-         λδ version 2 is started.
-   </li>
-    </ul>
-    <div xmlns:ld="http://lambdadelta.info/" class="head2dx" id="structure">Logical Structure of the Specification <img class="icon37" alt="[butterfly]" title="\lambda\delta butterfly" src="http://lambdadelta.info/images/b4.png" />
-    </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">This table reports the specification's components and their planes.
-   </div>
-    <div xmlns:ld="http://lambdadelta.info/" class="text">
-      <table cellpadding="4" cellspacing="0">
-        <tbody>
-          <tr>
-            <td class="snns top capitalize italic gray">component</td>
-            <td class="snns top capitalize italic gray">section</td>
-            <td class="snns top italic gray">plane</td>
-            <td class="snns top gray">files</td>
-            <td class="ssnn top gray">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="snns top capitalize italic blue">rt-conversion</td>
-            <td class="snns top capitalize italic blue">context-sensitive parallel r-conversion</td>
-            <td class="snns top italic blue">for terms</td>
-            <td class="snns top blue">cpc ( ⦃?,?⦄ ⊢ ? ⬌[?] ? )</td>
-            <td class="ssnn top blue">cpc_cpc</td>
-          </tr>
-          <tr>
-            <td class="snns top capitalize italic sky">rt-computation</td>
-            <td class="snns top capitalize italic sky">uncounted context-sensitive parallel rt-computation</td>
-            <td class="snns top italic sky">refinement for lenvs</td>
-            <td class="snns top sky">lsubsx ( ? ⊢ ? ⊆ⓧ[?,?,?] ? )</td>
-            <td class="ssnn top sky">lsubsx_lfsx lsubsx_lsubsx</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="snns top italic sky">strongly normalizing for lenvs on referred entries</td>
-            <td class="snns top sky">lfsx ( ? ⊢ ⬈*[?,?,?] 𝐒⦃?⦄ )</td>
-            <td class="ssnn top sky">lfsx_drops lfsx_fqup lfsx_lfpxs lfsx_lfsx</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="snns top italic sky">strongly normalizing for term vectors</td>
-            <td class="snns top sky">csx_vector ( ⦃?,?⦄ ⊢ ⬈*[?,?] 𝐒⦃?⦄ )</td>
-            <td class="ssnn top sky">csx_cnx_vector csx_csx_vector</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="snns top italic sky">strongly normalizing for terms</td>
-            <td class="snns top sky">csx ( ⦃?,?⦄ ⊢ ⬈*[?,?] 𝐒⦃?⦄ )</td>
-            <td class="ssnn top sky">csx_simple csx_simple_theq csx_drops csx_lsubr csx_lfdeq csx_aaa csx_gcp csx_gcr csx_lfpx csx_cnx csx_cpxs csx_lfpxs csx_csx</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="snns top italic sky">for lenvs on referred entries</td>
-            <td class="snns top sky">lfpxs ( ⦃?,?⦄ ⊢ ⬈*[?,?] ? )</td>
-            <td class="ssnn top sky">lfpxs_length lfpxs_drops lfpxs_fqup lfpxs_lfdeq lfpxs_aaa lfpxs_cpxs lfpxs_lpxs lfpxs_lfpxs</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="snns top italic sky">for lenvs on all entries</td>
-            <td class="snns top sky">lpxs ( ⦃?,?⦄ ⊢ ⬈*[?] ? )</td>
-            <td class="ssnn top sky">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic sky">
-              <br />
-            </td>
-            <td class="snns top italic sky">for terms</td>
-            <td class="snns top sky">cpxs ( ⦃?,?⦄ ⊢ ? ⬈*[?] ? )</td>
-            <td class="ssnn top sky">cpxs_tdeq cpxs_theq cpxs_theq_vector cpxs_drops cpxs_fqus cpxs_lsubr cpxs_lfdeq cpxs_aaa cpxs_lpx cpxs_lfpx cpxs_cnx cpxs_cpxs</td>
-          </tr>
-          <tr>
-            <td class="snns top capitalize italic cyan">rt-transition</td>
-            <td class="snns top capitalize italic cyan">uncounted parallel rst-transition</td>
-            <td class="snns top italic cyan">for closures</td>
-            <td class="snns top cyan">fpbq ( ⦃?,?,?⦄ ≽[?] ⦃?,?,?⦄ )</td>
-            <td class="ssnn top cyan">fpbq_aaa</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top italic cyan">proper for closures</td>
-            <td class="snns top cyan">fpb ( ⦃?,?,?⦄ ≻[?] ⦃?,?,?⦄ )</td>
-            <td class="ssnn top cyan">fpb_lfdeq</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top capitalize italic cyan">context-sensitive parallel r-transition</td>
-            <td class="snns top italic cyan">for lenvs on referred entries</td>
-            <td class="snns top cyan">lfpr ( ⦃?,?⦄ ⊢ ➡[?,?] ? )</td>
-            <td class="ssnn top cyan">lfpr_length lfpr_drops lfpr_fquq lfpr_fqup lfpr_frees lfpr_aaa lfpr_lfpx lfpr_lfpr</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top italic cyan">for binders</td>
-            <td class="snns top cyan">cpr_ext ( ⦃?,?⦄ ⊢ ? ➡[?] ? )</td>
-            <td class="ssnn top cyan">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top italic cyan">for terms</td>
-            <td class="snns top cyan">cpr ( ⦃?,?⦄ ⊢ ? ➡[?] ? )</td>
-            <td class="ssnn top cyan">cpr_drops</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top capitalize italic cyan">t-bound context-sensitive parallel rt-transition</td>
-            <td class="snns top italic cyan">for terms</td>
-            <td class="snns top cyan">cpm ( ⦃?,?⦄ ⊢ ? ➡[?,?] ? )</td>
-            <td class="ssnn top cyan">cpm_simple cpm_drops cpm_lsubr cpm_lfxs cpm_cpx</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top capitalize italic cyan">uncounted context-sensitive parallel rt-transition</td>
-            <td class="snns top italic cyan">normal form for terms</td>
-            <td class="snns top cyan">cnx ( ⦃?,?⦄ ⊢ ⬈[?,?] 𝐍⦃?⦄ )</td>
-            <td class="ssnn top cyan">cnx_simple cnx_drops cnx_cnx</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top italic cyan">for lenvs on referred entries</td>
-            <td class="snns top cyan">lfpx ( ⦃?,?⦄ ⊢ ⬈[?,?] ? )</td>
-            <td class="ssnn top cyan">lfpx_length lfpx_drops lfpx_fqup lfpx_frees lfpx_lfdeq lfpx_aaa lfpx_cpx lfpx_lfpx</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top italic cyan">for lenvs on all entries</td>
-            <td class="snns top cyan">lpx ( ⦃?,?⦄ ⊢ ⬈[?] ? )</td>
-            <td class="ssnn top cyan">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top italic cyan">for binders</td>
-            <td class="snns top cyan">cpx_ext ( ⦃?,?⦄ ⊢ ? ⬈[?] ? )</td>
-            <td class="ssnn top cyan">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top italic cyan">for terms</td>
-            <td class="snns top cyan">cpx ( ⦃?,?⦄ ⊢ ? ⬈[?] ? )</td>
-            <td class="ssnn top cyan">cpx_simple cpx_drops cpx_fqus cpx_lsubr cpx_lfxs cpx_lfeq</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic cyan">
-              <br />
-            </td>
-            <td class="snns top capitalize italic cyan">counted context-sensitive parallel rt-transition</td>
-            <td class="snns top italic cyan">for terms</td>
-            <td class="snns top cyan">cpg ( ⦃?,?⦄ ⊢ ? ⬈[?,?] ? )</td>
-            <td class="ssnn top cyan">cpg_simple cpg_drops cpg_lsubr</td>
-          </tr>
-          <tr>
-            <td class="snns top capitalize italic water">iterated static typing</td>
-            <td class="snns top capitalize italic water">iterated generic extension of a context-sensitive relation</td>
-            <td class="snns top italic water">for lenvs on referred entries</td>
-            <td class="snns top water">tc_lfxs ( ? ⦻**[?,?] ? )</td>
-            <td class="ssnn top water">tc_lfxs_length tc_lfxs_lex tc_lfxs_drops tc_lfxs_fqup tc_lfxs_tc_lfxs</td>
-          </tr>
-          <tr>
-            <td class="snns top capitalize italic green">static typing</td>
-            <td class="snns top capitalize italic green">generic reducibility</td>
-            <td class="snns top italic green">restricted refinement for lenvs</td>
-            <td class="snns top green">lsubc ( ? ⊢ ? ⫃[?] ? )</td>
-            <td class="ssnn top green">lsubc_drops lsubc_lsubr lsubc_lsuba</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top italic green">candidates</td>
-            <td class="snns top green">gcp_cr ( ⦃?,?,?⦄ ϵ[?] 〚?〛 )</td>
-            <td class="ssnn top green">gcp_aaa</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top italic green">computation properties</td>
-            <td class="snns top green">gcp</td>
-            <td class="ssnn top green">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top capitalize italic green">atomic arity assignment</td>
-            <td class="snns top italic green">restricted refinement for lenvs</td>
-            <td class="snns top green">lsuba ( ? ⊢ ? ⫃⁝ ? )</td>
-            <td class="ssnn top green">lsuba_drops lsuba_lsubr lsuba_aaa lsuba_lsuba</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top italic green">for terms</td>
-            <td class="snns top green">aaa ( ⦃?,?⦄ ⊢ ? ⁝ ? )</td>
-            <td class="ssnn top green">aaa_drops aaa_fqus aaa_lfdeq aaa_aaa</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top capitalize italic green">degree-based equivalence</td>
-            <td class="snns top italic green">for closures on referred entries</td>
-            <td class="snns top green">ffdeq ( ⦃?,?,?⦄ ≛[?,?] ⦃?,?,?⦄ )</td>
-            <td class="ssnn top green">ffdeq_fqup ffdeq_ffdeq</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top italic green">for lenvs on referred entries</td>
-            <td class="snns top green">lfdeq ( ? ≛[?,?,?] ? )</td>
-            <td class="ssnn top green">lfdeq_length lfdeq_drops lfdeq_fqup lfdeq_fqus lfdeq_lfdeq</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top capitalize italic green">syntactic equivalence</td>
-            <td class="snns top italic green">for lenvs on referred entries</td>
-            <td class="snns top green">lfeq ( ? ≡[?] ? )</td>
-            <td class="ssnn top green">lfeq_fqup lfeq_lfeq</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top capitalize italic green">generic extension of a context-sensitive relation</td>
-            <td class="snns top italic green">for lenvs on referred entries</td>
-            <td class="snns top green">lfxs ( ? ⦻*[?,?] ? )</td>
-            <td class="ssnn top green">lfxs_length lfxs_drops lfxs_fqup lfxs_lfxs</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top capitalize italic green">context-sensitive free variables</td>
-            <td class="snns top italic green">restricted refinement for lenvs</td>
-            <td class="snns top green">lsubf ( ⦃?,?⦄ ⫃𝐅* ⦃?,?⦄ )</td>
-            <td class="ssnn top green">lsubf_lsubr lsubf_frees lsubf_lsubf</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top italic green">for terms</td>
-            <td class="snns top green">frees ( ? ⊢ 𝐅*⦃?⦄ ≡ ? )</td>
-            <td class="ssnn top green">frees_drops frees_fqup frees_frees</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic green">
-              <br />
-            </td>
-            <td class="snns top capitalize italic green">local environments</td>
-            <td class="snns top italic green">restricted refinement</td>
-            <td class="snns top green">lsubr ( ? ⫃ ? )</td>
-            <td class="ssnn top green">lsubr_length lsubr_drops lsubr_lsubr</td>
-          </tr>
-          <tr>
-            <td class="snns top capitalize italic grass">s-computation</td>
-            <td class="snns top capitalize italic grass">iterated structural successor</td>
-            <td class="snns top italic grass">for closures</td>
-            <td class="snns top grass">fqus ( ⦃?,?,?⦄ ⊐*[?] ⦃?,?,?⦄ ) ( ⦃?,?,?⦄ ⊐* ⦃?,?,?⦄ )</td>
-            <td class="ssnn top grass">fqus_weight fqus_drops fqus_fqup fqus_fqus</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic grass">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic grass">
-              <br />
-            </td>
-            <td class="snns top italic grass">proper for closures</td>
-            <td class="snns top grass">fqup ( ⦃?,?,?⦄ ⊐+[?] ⦃?,?,?⦄ ) ( ⦃?,?,?⦄ ⊐+ ⦃?,?,?⦄ )</td>
-            <td class="ssnn top grass">fqup_weight fqup_drops fqup_fqup</td>
-          </tr>
-          <tr>
-            <td class="snns top capitalize italic yellow">s-transition</td>
-            <td class="snns top capitalize italic yellow">structural successor</td>
-            <td class="snns top italic yellow">for closures</td>
-            <td class="snns top yellow">fquq ( ⦃?,?,?⦄ ⊐⸮[?] ⦃?,?,?⦄ ) ( ⦃?,?,?⦄ ⊐⸮ ⦃?,?,?⦄ )</td>
-            <td class="ssnn top yellow">fquq_length fquq_weight</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic yellow">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic yellow">
-              <br />
-            </td>
-            <td class="snns top italic yellow">proper for closures</td>
-            <td class="snns top yellow">fqu ( ⦃?,?,?⦄ ⊐[?] ⦃?,?,?⦄ ) ( ⦃?,?,?⦄ ⊐ ⦃?,?,?⦄ )</td>
-            <td class="ssnn top yellow">fqu_length fqu_weight</td>
-          </tr>
-          <tr>
-            <td class="snns top capitalize italic orange">relocation</td>
-            <td class="snns top capitalize italic orange">generic slicing</td>
-            <td class="snns top italic orange">for lenvs</td>
-            <td class="snns top orange">drops ( ⬇*[?,?] ? ≡ ? ) ( ⬇*[?] ? ≡ ? )</td>
-            <td class="ssnn top orange">drops_lstar drops_weight drops_length drops_cext2 drops_lexs drops_lreq drops_drops drops_vector</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic orange">
-              <br />
-            </td>
-            <td class="snns top capitalize italic orange">generic relocation</td>
-            <td class="snns top italic orange">for binders</td>
-            <td class="snns top orange">lifts_bind ( ⬆*[?] ? ≡ ? )</td>
-            <td class="ssnn top orange">lifts_weight_bind lifts_lifts_bind</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic orange">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic orange">
-              <br />
-            </td>
-            <td class="snns top italic orange">for term vectors</td>
-            <td class="snns top orange">lifts_vector ( ⬆*[?] ? ≡ ? )</td>
-            <td class="ssnn top orange">lifts_lifts_vector</td>
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-          <tr>
-            <td class="nnns top capitalize italic orange">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic orange">
-              <br />
-            </td>
-            <td class="snns top italic orange">for terms</td>
-            <td class="snns top orange">lifts ( ⬆*[?] ? ≡ ? )</td>
-            <td class="ssnn top orange">lifts_simple lifts_weight lifts_tdeq lifts_lifts</td>
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-            <td class="nnns top capitalize italic orange">
-              <br />
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-            <td class="snns top italic orange">for lenvs on selected entries</td>
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-            <td class="ssnn top orange">lreq_length lreq_lreq</td>
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-              <br />
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-            <td class="nnns top capitalize italic orange">
-              <br />
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-              <br />
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-            <td class="snns top italic orange">for lenvs of two contex-sensitive relations</td>
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-            <td class="ssnn top orange">lexs_tc lexs_length lexs_lexs</td>
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-            <td class="nnns top capitalize italic red">
-              <br />
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-            <td class="snns top italic red" />
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-            <td class="snns top italic red" />
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-              <br />
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-              <br />
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-              <br />
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-            <td class="snns top italic red" />
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-          <tr>
-            <td class="nnns top capitalize italic red">
-              <br />
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-            <td class="snns top italic red" />
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-            <td class="ssnn top red">
-              <br />
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-            <td class="nnns top capitalize italic red">
-              <br />
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-              <br />
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-            <td class="snns top italic red" />
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-            <td class="ssnn top red">
-              <br />
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-          <tr>
-            <td class="nnns top capitalize italic red">
-              <br />
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-            <td class="snns top italic red" />
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-              <br />
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-              <br />
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-            <td class="snns top italic red" />
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-              <br />
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-              <br />
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-              <br />
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-              <br />
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-              <br />
-            </td>
-            <td class="snns top italic red" />
-            <td class="snns top red">lenv_length ( |?| )</td>
-            <td class="ssnn top red">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic red">
-              <br />
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-              <br />
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-            <td class="snns top italic red" />
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-            <td class="ssnn top red">
-              <br />
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-          </tr>
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-            <td class="nnns top capitalize italic red">
-              <br />
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-              <br />
-            </td>
-            <td class="snns top italic red" />
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-            <td class="ssnn top red">
-              <br />
-            </td>
-          </tr>
-          <tr>
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-              <br />
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-            <td class="snns top capitalize italic red">binders for local environments</td>
-            <td class="snns top italic red" />
-            <td class="snns top red">ext2</td>
-            <td class="ssnn top red">ext2_tc ext2_ext2</td>
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-          <tr>
-            <td class="nnns top capitalize italic red">
-              <br />
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-            <td class="nnns top capitalize italic red">
-              <br />
-            </td>
-            <td class="snns top italic red" />
-            <td class="snns top red">bind</td>
-            <td class="ssnn top red">bind_weight</td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic red">
-              <br />
-            </td>
-            <td class="snns top capitalize italic red">terms</td>
-            <td class="snns top italic red" />
-            <td class="snns top red">term_vector ( Ⓐ?.? )</td>
-            <td class="ssnn top red">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic red">
-              <br />
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-            <td class="nnns top capitalize italic red">
-              <br />
-            </td>
-            <td class="snns top italic red" />
-            <td class="snns top red">term_simple ( 𝐒⦃?⦄ )</td>
-            <td class="ssnn top red">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic red">
-              <br />
-            </td>
-            <td class="nnns top capitalize italic red">
-              <br />
-            </td>
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-            <td class="ssnn top red">
-              <br />
-            </td>
-          </tr>
-          <tr>
-            <td class="nnns top capitalize italic red">
-              <br />
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-            <td class="nnns top capitalize italic red">
-              <br />
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-            <td class="snns top italic red" />
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-            <td class="ssnn top red">
-              <br />
-            </td>
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-            <td class="nnns top capitalize italic red">
-              <br />
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-            <td class="ssnn top red">
-              <br />
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-            <td class="ssnn top red">
-              <br />
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-            <td class="ssnn top red">
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-            <td class="snss top capitalize italic red">atomic arities</td>
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-            <td class="sssn top red">
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