Formalization of Linear Space Theory in the Higher-Order Logic Proving System

<table><tr><td><table class="algorithm" id="alg2"><tr><td colspan="2">- e (DISCH_TAC)</td></tr><tr><td colspan="2">OK..</td></tr><tr><td colspan="2">1 subgoal:</td></tr><tr><td colspan="2">&gt; val it =</td></tr><tr><td colspan="2"><i> </i>  !x. ?!y. (y = ls0) <i>∧</i> (x LP ls0 = x)</td></tr><tr><td colspan="2"> </td></tr><tr><td colspan="2">  <i> </i>linear_space s ls</td></tr><tr><td colspan="2">    : proof</td></tr></table></td></tr></table>

Journal of Applied Mathematics

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Algorithm 2: Formalization of Linear Space Theory in the Higher-Order Logic Proving System 