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| Mirrors > Home > ILE Home > Th. List > f1oeq1 | Unicode version | ||
| Description: Equality theorem for one-to-one onto functions. (Contributed by NM, 10-Feb-1997.) |
| Ref | Expression |
|---|---|
| f1oeq1 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1eq1 5596 |
. . 3
| |
| 2 | foeq1 5614 |
. . 3
| |
| 3 | 1, 2 | anbi12d 477 |
. 2
|
| 4 | df-f1o 5387 |
. 2
| |
| 5 | df-f1o 5387 |
. 2
| |
| 6 | 3, 4, 5 | 3bitr4g 223 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-br 4132 df-opab 4194 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-fun 5382 df-fn 5383 df-f 5384 df-f1 5385 df-fo 5386 df-f1o 5387 |
| This theorem is used by: f1oeq123d 5636 f1oeq1d 5637 f1ocnvb 5656 f1orescnv 5658 f1ovi 5683 f1osng 5685 f1oresrab 5876 fsn 5883 isoeq1 6010 mapsnd 6976 mapsn 6978 mapsnf1o3 6985 f1oen4g 7044 f1oen3g 7046 ensn1 7089 en2prd 7112 xpcomf1o 7129 xpen 7151 seq3f1olemstep 10971 seq3f1olemp 10972 seqf1oglem2 10977 seqf1og 10978 fihasheqf1oi 11247 fihashf1rn 11248 hashfacen 11305 fzf1o 12166 summodc 12174 fsum3 12178 prodmodc 12369 fprodseq 12374 eulerthlemh 13037 gsumvalfi 14241 relogf1o 16107 2lgslem1 16432 |
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