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| Mirrors > Home > ILE Home > Th. List > feq3d | Unicode version | ||
| Description: Equality deduction for functions. (Contributed by AV, 1-Jan-2020.) |
| Ref | Expression |
|---|---|
| feq2d.1 |
|
| Ref | Expression |
|---|---|
| feq3d |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | feq2d.1 |
. 2
| |
| 2 | feq3 5521 |
. 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-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-11 1559 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-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-in 3226 df-ss 3233 df-f 5384 |
| This theorem is used by: gzsumress 13770 resmhm2b 13854 isghm 14104 gsumvalfi 14241 gsumressfi 14266 uptx 15517 txcn 15518 dvply2g 16009 lgseisenlem3 16413 lgseisenlem4 16414 uhgr0vb 16547 uhgrun 16549 upgrun 16589 umgrun 16591 wksfval 16785 wlkres 16842 |
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