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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1eq1 5211 |
. . 3
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2 | foeq1 5229 |
. . 3
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3 | 1, 2 | anbi12d 457 |
. 2
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4 | df-f1o 5022 |
. 2
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5 | df-f1o 5022 |
. 2
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6 | 3, 4, 5 | 3bitr4g 221 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 665 ax-5 1381 ax-7 1382 ax-gen 1383 ax-ie1 1427 ax-ie2 1428 ax-8 1440 ax-10 1441 ax-11 1442 ax-i12 1443 ax-bndl 1444 ax-4 1445 ax-17 1464 ax-i9 1468 ax-ial 1472 ax-i5r 1473 ax-ext 2070 |
This theorem depends on definitions: df-bi 115 df-3an 926 df-tru 1292 df-nf 1395 df-sb 1693 df-clab 2075 df-cleq 2081 df-clel 2084 df-nfc 2217 df-v 2621 df-un 3003 df-in 3005 df-ss 3012 df-sn 3452 df-pr 3453 df-op 3455 df-br 3846 df-opab 3900 df-rel 4445 df-cnv 4446 df-co 4447 df-dm 4448 df-rn 4449 df-fun 5017 df-fn 5018 df-f 5019 df-f1 5020 df-fo 5021 df-f1o 5022 |
This theorem is referenced by: f1oeq123d 5250 f1ocnvb 5267 f1orescnv 5269 f1ovi 5292 f1osng 5294 f1oresrab 5463 fsn 5469 isoeq1 5580 mapsn 6445 mapsnf1o3 6452 f1oen3g 6469 ensn1 6511 xpcomf1o 6539 xpen 6559 seq3f1olemstep 9926 seq3f1olemp 9927 fihasheqf1oi 10192 fihashf1rn 10193 hashfacen 10237 isummo 10769 fisum 10774 |
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