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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 7429 fseq1p1m1 10512 fseq1m1p1 10513 seqf 10916 seqf2 10920 seqf1og 10973 iswrdinn0 11325 wrdf 11326 iswrdiz 11327 wrdffz 11341 ffz0iswrdnn0 11347 wrdnval 11351 ccatalpha 11397 swrdf 11443 swrdwrdsymbg 11452 cats1un 11509 s2dmg 11578 intopsn 13740 resmhm 13847 gzsumwsubmcl 13854 gzsumwmhm 13856 isghm 14099 resghm 14116 gzsumsplit0 14232 gsumvalfi 14236 gzsumgsum 14239 psrelbasfi 15152 lmtopcnp 15442 ellimc3apf 15852 dvidlemap 15883 dvidrelem 15884 dvidsslem 15885 dviaddf 15897 dvimulf 15898 dvcjbr 15900 dvcj 15901 dvrecap 15905 dvmptclx 15910 uhgrm 16485 wrdupgren 16503 upgrfnen 16505 wrdumgren 16513 umgrfnen 16515 upgr2wlkdc 16784 wlkres 16786 |
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