Nuprl - Pf contrapositive 1 1 1

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At: contrapositive 1 1 1

1. P: Prop
2. Q: Prop
3. P P
4. Q Q
5. P Q
6. Q

P

By: Analyze 3

Generated subgoal:

1 3. P
4. Q Q
5. P Q
6. Q
P

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(9steps) PrintForm Definitions core 3 jlc Sections Support(jlc) Doc