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  • #145
Closed
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Issue created Jan 24, 2018 by Robbert Krebbers@robbertkrebbersMaintainer

Framing should succeed when a disjunct is exactly the framed hypothesis

For example, framing P in (P ∨ Q) ∗ R should succeed and turn the goal into R.

In general, framing of non-persistent hypotheses in just one disjunct of a disjunction leads to information loss, so should fail. However, if framing in one disjunct turns it into True, framing should succeed.

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