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| Mirrors > Home > ILE Home > Th. List > f1oeq3 | Unicode version | ||
| Description: Equality theorem for one-to-one onto functions. (Contributed by NM, 10-Feb-1997.) |
| Ref | Expression |
|---|---|
| f1oeq3 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1eq3 5570 |
. . 3
| |
| 2 | foeq3 5588 |
. . 3
| |
| 3 | 1, 2 | anbi12d 473 |
. 2
|
| 4 | df-f1o 5359 |
. 2
| |
| 5 | df-f1o 5359 |
. 2
| |
| 6 | 3, 4, 5 | 3bitr4g 223 |
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-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-11 1555 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2214 |
| This theorem depends on definitions: df-bi 117 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-in 3217 df-ss 3224 df-f 5356 df-f1 5357 df-fo 5358 df-f1o 5359 |
| This theorem is referenced by: f1oeq23 5605 f1oeq123d 5608 f1oeq3d 5611 f1ores 5629 resdif 5636 f1osng 5657 f1oresrab 5842 isoeq5 5978 isoini2 5992 mapsnf1o 6972 breng 6982 bren 6983 xpcomf1o 7076 frechashgf1o 10790 sumeq1 12040 fisumss 12078 fsumcnv 12123 prodeq1f 12238 4sqlem11 13099 ennnfonelemhf1o 13164 ennnfonelemex 13165 ssnnctlemct 13197 uspgredgiedg 16173 |
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