(13steps total) PrintForm Definitions Lemmas LogicSupplement Sections DiscrMathExt Doc
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At: decidable cand 2 2 1
1. P : Prop
2. Q : Prop(given P)
3. Dec(P)
4. P
  Q  Prop
By: BackThru: Thm*  Q:Prop(given P). P  Q  Prop

Generated subgoals:

None

About:
isectmemberpropimpliesall
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(13steps total) PrintForm Definitions Lemmas LogicSupplement Sections DiscrMathExt Doc