PrintForm Definitions sequent valid Sections ClassicalProps(jlc) Doc

At: formula valid iff sequent valid 1 1 2 1 1 1 2
1. F: Formula
2. a: Assignment
3. True
4. a | F
5. True
6. a |= F

a |= < nil,[F] >
By:
UnfoldTopAb 0
THEN
Choose [2]
THEN
AbReduce 0
Generated subgoal:

1 a |= F False

About:
pairnilconstrueorfalse