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Mirrors > Home > ILE Home > Th. List > f1eq123d | Unicode version |
Description: Equality deduction for one-to-one functions. (Contributed by Mario Carneiro, 27-Jan-2017.) |
Ref | Expression |
---|---|
f1eq123d.1 | |
f1eq123d.2 | |
f1eq123d.3 |
Ref | Expression |
---|---|
f1eq123d |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1eq123d.1 | . . 3 | |
2 | f1eq1 5388 | . . 3 | |
3 | 1, 2 | syl 14 | . 2 |
4 | f1eq123d.2 | . . 3 | |
5 | f1eq2 5389 | . . 3 | |
6 | 4, 5 | syl 14 | . 2 |
7 | f1eq123d.3 | . . 3 | |
8 | f1eq3 5390 | . . 3 | |
9 | 7, 8 | syl 14 | . 2 |
10 | 3, 6, 9 | 3bitrd 213 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wb 104 wceq 1343 wf1 5185 |
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 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-ext 2147 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-nf 1449 df-sb 1751 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-v 2728 df-un 3120 df-in 3122 df-ss 3129 df-sn 3582 df-pr 3583 df-op 3585 df-br 3983 df-opab 4044 df-rel 4611 df-cnv 4612 df-co 4613 df-dm 4614 df-rn 4615 df-fun 5190 df-fn 5191 df-f 5192 df-f1 5193 |
This theorem is referenced by: (None) |
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