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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 5942 |
. 2
| |
| 2 | fveq2 5670 |
. 2
| |
| 3 | 1, 2 | impbid1 142 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2206 ax-ext 2214 ax-sep 4228 ax-pow 4287 ax-pr 4322 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ral 2525 df-rex 2526 df-v 2815 df-sbc 3043 df-un 3215 df-in 3217 df-ss 3224 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-br 4110 df-opab 4172 df-id 4414 df-xp 4755 df-rel 4756 df-cnv 4757 df-co 4758 df-dm 4759 df-iota 5312 df-fun 5354 df-fn 5355 df-f 5356 df-f1 5357 df-fv 5360 |
| This theorem is referenced by: f1elima 5946 cocan1 5960 f1oiso 5999 2dom 7046 xpdom2 7082 en2eqpr 7167 isotilem 7297 frec2uzled 10791 seqf1oglem1 10881 hashen 11147 eulerthlemh 12928 f1ocpbllem 13523 f1ovscpbl 13525 relogef 15729 usgredg2v 16219 iswomninnlem 16834 |
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