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| Mirrors > Home > ILE Home > Th. List > funeqd | GIF version | ||
| Description: Equality deduction for the function predicate. (Contributed by NM, 23-Feb-2013.) |
| Ref | Expression |
|---|---|
| funeqd.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| funeqd | ⊢ (𝜑 → (Fun 𝐴 ↔ Fun 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funeqd.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | funeq 5348 | . 2 ⊢ (𝐴 = 𝐵 → (Fun 𝐴 ↔ Fun 𝐵)) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → (Fun 𝐴 ↔ Fun 𝐵)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1397 Fun wfun 5322 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2212 |
| This theorem depends on definitions: df-bi 117 df-nf 1509 df-sb 1810 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-in 3205 df-ss 3212 df-br 4090 df-opab 4152 df-rel 4734 df-cnv 4735 df-co 4736 df-fun 5330 |
| This theorem is referenced by: funopg 5362 funsng 5378 funcnvuni 5401 f1eq1 5540 f1ssf1 5618 funopsn 5833 frecuzrdgtclt 10689 fundm2domnop0 11118 shftfn 11407 ennnfonelemfun 13061 ennnfonelemf1 13062 isstruct2im 13115 isstruct2r 13116 structfung 13122 setsfun 13140 setsfun0 13141 strslfv3 13151 uhgrspansubgrlem 16156 p1evtxdeqfilem 16191 istrl 16265 trlsegvdeglem2 16341 trlsegvdeglem3 16342 funmptd 16460 |
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