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Mirrors > Home > ILE Home > Th. List > feq23i | Unicode version |
Description: Equality inference for functions. (Contributed by Paul Chapman, 22-Jun-2011.) |
Ref | Expression |
---|---|
feq23i.1 | |
feq23i.2 |
Ref | Expression |
---|---|
feq23i |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | feq23i.1 | . 2 | |
2 | feq23i.2 | . 2 | |
3 | feq23 5317 | . 2 | |
4 | 1, 2, 3 | mp2an 423 | 1 |
Colors of variables: wff set class |
Syntax hints: wb 104 wceq 1342 wf 5178 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-11 1493 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-ext 2146 |
This theorem depends on definitions: df-bi 116 df-nf 1448 df-sb 1750 df-clab 2151 df-cleq 2157 df-clel 2160 df-in 3117 df-ss 3124 df-fn 5185 df-f 5186 |
This theorem is referenced by: ftpg 5663 |
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