@@ -38,7 +38,7 @@ NewTactic exact
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Introduction
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"
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In this world we'll learn how to prove theorems of the form $P\\implies Q$.
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In othey words, how to prove theorems of the form \"if $P$ is true, then $Q$ is true.\"
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In other words, how to prove theorems of the form \"if $P$ is true, then $Q$ is true.\"
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To do that we need to learn some more tactics.
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The `exact` tactic can be used to close a goal which is exactly one of
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