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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 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1eq3 5333 |
. . 3
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2 | foeq3 5351 |
. . 3
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3 | 1, 2 | anbi12d 465 |
. 2
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4 | df-f1o 5138 |
. 2
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5 | df-f1o 5138 |
. 2
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6 | 3, 4, 5 | 3bitr4g 222 |
1
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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 105 ax-ia2 106 ax-ia3 107 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-11 1485 ax-4 1488 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 |
This theorem depends on definitions: df-bi 116 df-nf 1438 df-sb 1737 df-clab 2127 df-cleq 2133 df-clel 2136 df-in 3082 df-ss 3089 df-f 5135 df-f1 5136 df-fo 5137 df-f1o 5138 |
This theorem is referenced by: f1oeq23 5367 f1oeq123d 5370 f1oeq3d 5372 f1ores 5390 resdif 5397 f1osng 5416 f1oresrab 5593 isoeq5 5714 isoini2 5728 mapsnf1o 6639 bren 6649 xpcomf1o 6727 frechashgf1o 10232 sumeq1 11156 fisumss 11193 fsumcnv 11238 prodeq1f 11353 ennnfonelemhf1o 11962 ennnfonelemex 11963 |
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