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meta name="generator" content="DocBook XSL Stylesheets V1.68.1" /><link rel="start" href="index.html" title="Matita V0.1.0 Manual (rev. 0)" /><link rel="up" href="sec_tactics.html" title="Chapter 6. Tactics" /><link rel="prev" href="tac_id.html" title="id" /><link rel="next" href="tac_intro.html" title="intro [id]" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">injection sterm</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="tac_id.html">Prev</a> </td><th width="60%" align="center">Chapter 6. Tactics</th><td width="20%" align="right"> <a accesskey="n" href="tac_intro.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="tac_injection"></a>injection <span class="emphasis"><em><a href="sec_terms.html#sterm">sterm</a></em></span></h2></div></div></div><p><strong class="userinput"><code>injection p</code></strong></p><p>
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link rel="stylesheet" href="docbook.css" type="text/css" /><meta name="generator" content="DocBook XSL Stylesheets V1.68.1" /><link rel="start" href="index.html" title="Matita V0.1.0 User Manual (rev. 1α)" /><link rel="up" href="sec_tactics.html" title="Chapter 6. Tactics" /><link rel="prev" href="tac_id.html" title="id" /><link rel="next" href="tac_intro.html" title="intro [id]" /></head><body><a xmlns="" href="../../"><div class="matita_logo"><img src="../../images/matita-tiny.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">injection sterm</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="tac_id.html">Prev</a> </td><th width="60%" align="center">Chapter 6. Tactics</th><td width="20%" align="right"> <a accesskey="n" href="tac_intro.html">Next</a></td></tr></table><hr /></div><div class="sect1" lang="en" xml:lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="tac_injection"></a>injection <span class="emphasis"><em><a href="sec_terms.html#sterm">sterm</a></em></span></h2></div></div></div><p><strong class="userinput"><code>injection p</code></strong></p><p>
</p><div class="variablelist"><dl><dt><span class="term">Pre-conditions:</span></dt><dd><p><span><strong class="command">p</strong></span> must have type <span><strong class="command">K t<sub>1</sub> ... t<sub>n</sub> = K t'<sub>1</sub> ... t'<sub>n</sub></strong></span> where both argument lists are empty if
<span><strong class="command">K</strong></span> takes no arguments.</p></dd><dt><span class="term">Action:</span></dt><dd><p>It derives new hypotheses by injectivity of
<span><strong class="command">K</strong></span>.</p></dd><dt><span class="term">New sequents to prove:</span></dt><dd><p>The new sequent to prove is equal to the current sequent
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