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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 |
|
| Ref | Expression |
|---|---|
| feq1d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | feq1d.1 |
. 2
| |
| 2 | feq1 5519 |
. 2
| |
| 3 | 1, 2 | syl 14 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-br 4132 df-opab 4194 df-rel 4783 df-cnv 4784 df-co 4785 df-dm 4786 df-rn 4787 df-fun 5382 df-fn 5383 df-f 5384 |
| This theorem is used by: feq12d 5526 fco2 5557 fssres2 5570 fresin 5571 fmpt3d 5867 fmptco 5877 fressnfv 5905 off 6319 caofinvl 6332 f2ndf 6466 eroprf 6906 pmresg 6961 pw2f1odclem 7138 fseq1p1m1 10518 mgmplusf 13745 mgmb1mgm1 13747 grpsubf 13943 lmodscaf 14756 psrass1filem 15177 lmbr 15439 blfps 15635 blf 15636 dvmptclx 15944 lgsfcl3 16345 |
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