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At: decidable functionality wrt iff 2 1
1. P: Prop
2. Q: Prop
3. P Q
4. P Q
5. Q

P P
By:
DNth 1 0
THEN
FwdThru 4 [5]
THEN
Trivial
Generated subgoals:

None

About:
propimpliesor

(13steps) PrintForm Definitions core 3 jlc Sections Support(jlc) Doc