1.6 Tableaux soundness

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  1. Chico Jones
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Автор

We gave a bunch of examples in which the Soundness Lemma could be applied and the result was valid — but how can we know that the Soundess Lemma is truly valid for every case?

wcsah
Автор

23:45 - 24:24, we extrapolated that the Soundness Lemma applied all the way down every branch.  But in the second bullet of #7 we're reminded that the tip isn't necessarily valid.  How can we know that there IS, in fact, a valid b?

wcsah
Автор

19:39 to go to the end of the Soundness Lemma examples and continue on to the Soundness Theorem notes

wcsah