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Mirrors > Home > ILE Home > Th. List > dff4im | Unicode version |
Description: Property of a mapping. (Contributed by Jim Kingdon, 4-Jan-2019.) |
Ref | Expression |
---|---|
dff4im |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dff3im 5605 |
. 2
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2 | df-br 3962 |
. . . . . . . 8
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3 | ssel 3118 |
. . . . . . . . 9
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4 | opelxp2 4614 |
. . . . . . . . 9
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5 | 3, 4 | syl6 33 |
. . . . . . . 8
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6 | 2, 5 | syl5bi 151 |
. . . . . . 7
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7 | 6 | pm4.71rd 392 |
. . . . . 6
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8 | 7 | eubidv 2011 |
. . . . 5
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9 | df-reu 2439 |
. . . . 5
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10 | 8, 9 | bitr4di 197 |
. . . 4
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11 | 10 | ralbidv 2454 |
. . 3
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12 | 11 | pm5.32i 450 |
. 2
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13 | 1, 12 | sylib 121 |
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-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1481 ax-10 1482 ax-11 1483 ax-i12 1484 ax-bndl 1486 ax-4 1487 ax-17 1503 ax-i9 1507 ax-ial 1511 ax-i5r 1512 ax-14 2128 ax-ext 2136 ax-sep 4078 ax-pow 4130 ax-pr 4164 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1740 df-eu 2006 df-mo 2007 df-clab 2141 df-cleq 2147 df-clel 2150 df-nfc 2285 df-ral 2437 df-rex 2438 df-reu 2439 df-v 2711 df-sbc 2934 df-un 3102 df-in 3104 df-ss 3111 df-pw 3541 df-sn 3562 df-pr 3563 df-op 3565 df-uni 3769 df-br 3962 df-opab 4022 df-id 4248 df-xp 4585 df-rel 4586 df-cnv 4587 df-co 4588 df-dm 4589 df-rn 4590 df-iota 5128 df-fun 5165 df-fn 5166 df-f 5167 df-fv 5171 |
This theorem is referenced by: (None) |
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