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| Mirrors > Home > ILE Home > Th. List > fmpti | GIF version | ||
| Description: Functionality of the mapping operation. (Contributed by NM, 19-Mar-2005.) (Revised by Mario Carneiro, 1-Sep-2015.) |
| Ref | Expression |
|---|---|
| fmpt.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶) |
| fmpti.2 | ⊢ (𝑥 ∈ 𝐴 → 𝐶 ∈ 𝐵) |
| Ref | Expression |
|---|---|
| fmpti | ⊢ 𝐹:𝐴⟶𝐵 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fmpti.2 | . . 3 ⊢ (𝑥 ∈ 𝐴 → 𝐶 ∈ 𝐵) | |
| 2 | 1 | rgen 2603 | . 2 ⊢ ∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 |
| 3 | fmpt.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐶) | |
| 4 | 3 | fmpt 5858 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐶 ∈ 𝐵 ↔ 𝐹:𝐴⟶𝐵) |
| 5 | 2, 4 | mpbi 145 | 1 ⊢ 𝐹:𝐴⟶𝐵 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 = wceq 1402 ∈ wcel 2209 ∀wral 2528 ↦ cmpt 4192 ⟶wf 5373 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-sbc 3052 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-fv 5385 |
| This theorem is used by: omp1eomlem 7434 fnn0nninf 10875 cjf 11612 ref 11620 imf 11621 absf 11876 eff 12430 sinf 12471 cosf 12472 bitsf 12713 fnum 12968 fden 12969 divcnap 15666 dveflem 15827 2lgslem1b 16208 nnsf 17048 nninfself 17056 |
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