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Mirrors > Home > ILE Home > Th. List > feq1d | Unicode version |
Description: Equality deduction for functions. (Contributed by NM, 19-Feb-2008.) |
Ref | Expression |
---|---|
feq1d.1 |
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Ref | Expression |
---|---|
feq1d |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | feq1d.1 |
. 2
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2 | feq1 5345 |
. 2
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3 | 1, 2 | syl 14 |
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-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-ext 2159 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-v 2739 df-un 3133 df-in 3135 df-ss 3142 df-sn 3598 df-pr 3599 df-op 3601 df-br 4002 df-opab 4063 df-rel 4631 df-cnv 4632 df-co 4633 df-dm 4634 df-rn 4635 df-fun 5215 df-fn 5216 df-f 5217 |
This theorem is referenced by: feq12d 5352 fco2 5379 fssres2 5390 fresin 5391 fmpt3d 5669 fmptco 5679 fressnfv 5700 off 6090 caofinvl 6100 f2ndf 6222 eroprf 6623 pmresg 6671 fseq1p1m1 10087 mgmplusf 12715 mgmb1mgm1 12717 grpsubf 12877 lmbr 13495 blfps 13691 blf 13692 dvmptclx 13962 lgsfcl3 14204 |
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