Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > freq1 | Unicode version |
Description: Equality theorem for the well-founded predicate. (Contributed by NM, 9-Mar-1997.) |
Ref | Expression |
---|---|
freq1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | frforeq1 4098 | . . 3 FrFor FrFor | |
2 | 1 | albidv 1745 | . 2 FrFor FrFor |
3 | df-frind 4087 | . 2 FrFor | |
4 | df-frind 4087 | . 2 FrFor | |
5 | 2, 3, 4 | 3bitr4g 221 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 103 wal 1282 wceq 1284 FrFor wfrfor 4082 wfr 4083 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-5 1376 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-4 1440 ax-17 1459 ax-ial 1467 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-nf 1390 df-cleq 2074 df-clel 2077 df-ral 2353 df-br 3786 df-frfor 4086 df-frind 4087 |
This theorem is referenced by: weeq1 4111 |
Copyright terms: Public domain | W3C validator |