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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 10501 fseq1m1p1 10502 seqf 10901 seqf2 10905 seqf1og 10958 iswrdinn0 11309 wrdf 11310 iswrdiz 11311 wrdffz 11325 ffz0iswrdnn0 11331 wrdnval 11335 ccatalpha 11381 swrdf 11427 swrdwrdsymbg 11436 cats1un 11493 s2dmg 11562 intopsn 13687 resmhm 13794 gzsumwsubmcl 13801 gzsumwmhm 13803 isghm 14046 resghm 14063 gzsumsplit0 14148 gsumvalfi 14152 gzsumgsum 14155 psrelbasfi 15067 lmtopcnp 15351 ellimc3apf 15761 dvidlemap 15792 dvidrelem 15793 dvidsslem 15794 dviaddf 15806 dvimulf 15807 dvcjbr 15809 dvcj 15810 dvrecap 15814 dvmptclx 15819 uhgrm 16319 wrdupgren 16337 upgrfnen 16339 wrdumgren 16347 umgrfnen 16349 upgr2wlkdc 16618 wlkres 16620 |
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