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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 5346 | . 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 5320 |
| 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 2213 |
| This theorem depends on definitions: df-bi 117 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-in 3206 df-ss 3213 df-br 4089 df-opab 4151 df-rel 4732 df-cnv 4733 df-co 4734 df-fun 5328 |
| This theorem is referenced by: funopg 5360 funsng 5376 funcnvuni 5399 f1eq1 5537 f1ssf1 5615 funopsn 5829 frecuzrdgtclt 10682 fundm2domnop0 11108 shftfn 11384 ennnfonelemfun 13037 ennnfonelemf1 13038 isstruct2im 13091 isstruct2r 13092 structfung 13098 setsfun 13116 setsfun0 13117 strslfv3 13127 uhgrspansubgrlem 16126 p1evtxdeqfilem 16161 istrl 16235 trlsegvdeglem2 16311 trlsegvdeglem3 16312 funmptd 16399 |
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