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Mirrors > Home > ILE Home > Th. List > funfveu | Unicode version |
Description: A function has one value given an argument in its domain. (Contributed by Jim Kingdon, 29-Dec-2018.) |
Ref | Expression |
---|---|
funfveu |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eleq1 2203 |
. . . . 5
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2 | 1 | anbi2d 460 |
. . . 4
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3 | breq1 3940 |
. . . . 5
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4 | 3 | eubidv 2008 |
. . . 4
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5 | 2, 4 | imbi12d 233 |
. . 3
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6 | dffun8 5159 |
. . . . 5
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7 | 6 | simprbi 273 |
. . . 4
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8 | 7 | r19.21bi 2523 |
. . 3
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9 | 5, 8 | vtoclg 2749 |
. 2
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10 | 9 | anabsi7 571 |
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 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-pow 4106 ax-pr 4139 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ral 2422 df-v 2691 df-un 3080 df-in 3082 df-ss 3089 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-br 3938 df-opab 3998 df-id 4223 df-cnv 4555 df-co 4556 df-dm 4557 df-fun 5133 |
This theorem is referenced by: funfvex 5446 |
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