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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>assume</title><link rel="stylesheet" type="text/css" href="docbook.css" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="home" href="index.html" title="Matita V0.99.5 User Manual (rev. 0.99.5 )" /><link rel="up" href="sec_declarative_tactics.html" title="Chapter 8. Declarative Tactics" /><link rel="prev" href="sec_declarative_tactics.html" title="Chapter 8. Declarative Tactics" /><link rel="next" href="tac_suppose.html" title="suppose" /></head><body><a xmlns="" href="../../../"><div class="matita_logo"><img src="figures/matita.png" alt="Tiny Matita logo" /><span>Matita Home</span></div></a><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">assume</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="sec_declarative_tactics.html">Prev</a> </td><th width="60%" align="center">Chapter 8. Declarative Tactics</th><td width="20%" align="right"> <a accesskey="n" href="tac_suppose.html">Next</a></td></tr></table><hr /></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="tac_assume"></a>assume</h2></div></div></div><p><strong class="userinput"><code>assume x : T</code></strong></p><p>
+ </p><div class="variablelist"><dl class="variablelist"><dt><span class="term">Synopsis:</span></dt><dd><p><span class="bold"><strong>assume</strong></span> <span class="emphasis"><em><a class="link" href="sec_terms.html#grammar.id">id</a></em></span> <span class="bold"><strong> : </strong></span>
+ <span class="emphasis"><em><a class="link" href="sec_terms.html#grammar.sterm">sterm</a></em></span> </p></dd><dt><span class="term">Pre-conditions:</span></dt><dd><p>
+ The conclusion of the sequent to prove must be a universal quantification.
+ </p></dd><dt><span class="term">Action:</span></dt><dd><p>
+ It applies the right introduction rule for the universal quantifier, closing the current sequent (in Natural Deduction this corresponds to the introduction rule for the quantifier).
+ </p></dd><dt><span class="term">New sequents to prove:</span></dt><dd><p>
+ It opens a new sequent to prove the quantified subformula adding <span class="command"><strong>x : T</strong></span> to the hypotheses.
+ </p></dd></dl></div><p>
+ </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sec_declarative_tactics.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sec_declarative_tactics.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="tac_suppose.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 8. Declarative Tactics </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> suppose</td></tr></table></div></body></html>
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