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Mirrors > Home > QLE Home > Th. List > ax-r1 | GIF version |
Description: Inference rule for ortholattices. (Contributed by NM, 9-Aug-1997.) |
Ref | Expression |
---|---|
r1.1 | a = b |
Ref | Expression |
---|---|
ax-r1 | b = a |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | wvb | . 2 term b | |
2 | wva | . 2 term a | |
3 | 1, 2 | wb 1 | 1 wff b = a |
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