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Mirrors > Home > ILE Home > Th. List > mpo2eqb | Unicode version |
Description: Bidirectional equality theorem for a mapping abstraction. Equivalent to eqfnov2 5976. (Contributed by Mario Carneiro, 4-Jan-2017.) |
Ref | Expression |
---|---|
mpo2eqb |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-mpo 5874 |
. . . 4
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2 | df-mpo 5874 |
. . . 4
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3 | 1, 2 | eqeq12i 2191 |
. . 3
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4 | eqoprab2b 5927 |
. . 3
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5 | pm5.32 453 |
. . . . . . 7
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6 | 5 | albii 1470 |
. . . . . 6
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7 | 19.21v 1873 |
. . . . . 6
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8 | 6, 7 | bitr3i 186 |
. . . . 5
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9 | 8 | 2albii 1471 |
. . . 4
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10 | r2al 2496 |
. . . 4
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11 | 9, 10 | bitr4i 187 |
. . 3
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12 | 3, 4, 11 | 3bitri 206 |
. 2
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13 | pm13.183 2875 |
. . . . . 6
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14 | 13 | ralimi 2540 |
. . . . 5
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15 | ralbi 2609 |
. . . . 5
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16 | 14, 15 | syl 14 |
. . . 4
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17 | 16 | ralimi 2540 |
. . 3
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18 | ralbi 2609 |
. . 3
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19 | 17, 18 | syl 14 |
. 2
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20 | 12, 19 | bitr4id 199 |
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 106 ax-ia2 107 ax-ia3 108 ax-in1 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-14 2151 ax-ext 2159 ax-sep 4118 ax-pow 4171 ax-pr 4206 ax-setind 4533 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-ral 2460 df-v 2739 df-dif 3131 df-un 3133 df-in 3135 df-ss 3142 df-pw 3576 df-sn 3597 df-pr 3598 df-op 3600 df-oprab 5873 df-mpo 5874 |
This theorem is referenced by: (None) |
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