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Mirrors > Home > QLE Home > Th. List > ax-a1 | GIF version |
Description: Axiom for ortholattices. (Contributed by NM, 9-Aug-1997.) |
Ref | Expression |
---|---|
ax-a1 | a = a⊥ ⊥ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | wva | . 2 term a | |
2 | 1 | wn 4 | . . 3 term a⊥ |
3 | 2 | wn 4 | . 2 term a⊥ ⊥ |
4 | 1, 3 | wb 1 | 1 wff a = a⊥ ⊥ |
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