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| Mirrors > Home > ILE Home > Th. List > fnmpt | GIF version | ||
| Description: The maps-to notation defines a function with domain. (Contributed by NM, 9-Apr-2013.) |
| Ref | Expression |
|---|---|
| mptfng.1 | ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) |
| Ref | Expression |
|---|---|
| fnmpt | ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → 𝐹 Fn 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elex 2812 | . . 3 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 2 | 1 | ralimi 2593 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 3 | mptfng.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 4 | 3 | mptfng 5455 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ V ↔ 𝐹 Fn 𝐴) |
| 5 | 2, 4 | sylib 122 | 1 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → 𝐹 Fn 𝐴) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1395 ∈ wcel 2200 ∀wral 2508 Vcvv 2800 ↦ cmpt 4148 Fn wfn 5319 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2802 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-br 4087 df-opab 4149 df-mpt 4150 df-id 4388 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-fun 5326 df-fn 5327 |
| This theorem is referenced by: mpt0 5457 fnmptfvd 5747 ralrnmpt 5785 rexrnmpt 5786 fmpt 5793 fmpt2d 5805 f1ocnvd 6220 offval2 6246 ofrfval2 6247 caofinvl 6256 f1od2 6395 frectfr 6561 omfnex 6612 oeiv 6619 mptelixpg 6898 fifo 7170 nnnninfeq 7318 nninfwlporlemd 7362 cc2lem 7475 seqf1og 10773 ccatlen 11162 ccatvalfn 11168 swrdlen 11223 swrdwrdsymbg 11235 swrdswrd 11276 efcvgfsum 12218 prdsbas3 13360 prdsbascl 13362 quslem 13397 grpinvfng 13617 conjnmz 13856 neif 14855 tgrest 14883 dvrecap 15427 gausslemma2dlem1f1o 15779 fnmptd 16336 |
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