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Mirrors > Home > ILE Home > Th. List > f1fveq | Unicode version |
Description: Equality of function values for a one-to-one function. (Contributed by NM, 11-Feb-1997.) |
Ref | Expression |
---|---|
f1fveq |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1veqaeq 5748 | . 2 | |
2 | fveq2 5496 | . 2 | |
3 | 1, 2 | impbid1 141 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wb 104 wceq 1348 wcel 2141 wf1 5195 cfv 5198 |
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-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-sbc 2956 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-br 3990 df-opab 4051 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fv 5206 |
This theorem is referenced by: f1elima 5752 cocan1 5766 f1oiso 5805 2dom 6783 xpdom2 6809 en2eqpr 6885 isotilem 6983 frec2uzled 10385 hashen 10718 eulerthlemh 12185 relogef 13579 iswomninnlem 14081 |
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