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| Mirrors > Home > ILE Home > Th. List > feq2d | Unicode version | ||
| Description: Equality deduction for functions. (Contributed by Paul Chapman, 22-Jun-2011.) |
| Ref | Expression |
|---|---|
| feq2d.1 |
|
| Ref | Expression |
|---|---|
| feq2d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | feq2d.1 |
. 2
| |
| 2 | feq2 5517 |
. 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-5 1500 ax-gen 1502 ax-4 1563 ax-17 1579 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-cleq 2231 df-fn 5380 df-f 5381 |
| This theorem is used by: feq12d 5523 ffdm 5558 fsng 5881 fsn2g 5883 issmo2 6560 qliftf 6894 elpm2r 6940 casef 7428 fseq1p1m1 10511 fseq1m1p1 10512 seqf 10914 seqf2 10918 seqf1og 10971 iswrdinn0 11323 wrdf 11324 iswrdiz 11325 wrdffz 11339 ffz0iswrdnn0 11345 wrdnval 11349 ccatalpha 11395 swrdf 11441 swrdwrdsymbg 11450 cats1un 11507 s2dmg 11576 intopsn 13736 resmhm 13843 gzsumwsubmcl 13850 gzsumwmhm 13852 isghm 14095 resghm 14112 gzsumsplit0 14197 gsumvalfi 14201 gzsumgsum 14204 psrelbasfi 15116 lmtopcnp 15400 ellimc3apf 15810 dvidlemap 15841 dvidrelem 15842 dvidsslem 15843 dviaddf 15855 dvimulf 15856 dvcjbr 15858 dvcj 15859 dvrecap 15863 dvmptclx 15868 uhgrm 16417 wrdupgren 16435 upgrfnen 16437 wrdumgren 16445 umgrfnen 16447 upgr2wlkdc 16716 wlkres 16718 |
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