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Definitions
sat
lemmas
Sections
ClassicalProps(jlc)
Doc
At:
formula
imp
falsifiable
lemma
1
1
2
1
1
1
2
1.
a:
Assignment
2.
q:
Formula
3.
r:
Formula
4.
(q under a) = 3
5.
(r under a) = 3
6.
3
= 3
3
= 3
By:
ThreeNEQ -1
Generated subgoals:
None
About:
= 3
3 = 3