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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 2827 | . . 3 ⊢ (𝐵 ∈ 𝑉 → 𝐵 ∈ V) | |
| 2 | 1 | ralimi 2607 | . 2 ⊢ (∀𝑥 ∈ 𝐴 𝐵 ∈ 𝑉 → ∀𝑥 ∈ 𝐴 𝐵 ∈ V) |
| 3 | mptfng.1 | . . 3 ⊢ 𝐹 = (𝑥 ∈ 𝐴 ↦ 𝐵) | |
| 4 | 3 | mptfng 5491 | . 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 1398 ∈ wcel 2205 ∀wral 2522 Vcvv 2815 ↦ cmpt 4177 Fn wfn 5354 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2208 ax-ext 2216 ax-sep 4234 ax-pow 4293 ax-pr 4328 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-un 3218 df-in 3220 df-ss 3227 df-pw 3677 df-sn 3701 df-pr 3702 df-op 3704 df-br 4116 df-opab 4178 df-mpt 4179 df-id 4420 df-xp 4762 df-rel 4763 df-cnv 4764 df-co 4765 df-dm 4766 df-fun 5361 df-fn 5362 |
| This theorem is referenced by: mpt0 5493 fnmptfvd 5789 ralrnmpt 5826 rexrnmpt 5827 fmpt 5834 fmpt2d 5846 f1ocnvd 6267 f1o3d 6273 offval2 6293 ofrfval2 6294 caofinvl 6303 f1od2 6446 frectfr 6646 omfnex 6697 oeiv 6704 mptelixpg 6984 fifo 7282 nnnninfeq 7434 nninfwlporlemd 7478 cc2lem 7598 seqf1og 10912 ccatlen 11313 ccatvalfn 11319 swrdlen 11374 swrdwrdsymbg 11386 swrdswrd 11427 efcvgfsum 12384 quslem 13594 grpinvfng 13798 conjnmz 14031 prdsbas3 14136 prdsbascl 14138 rrgsupp 14519 neif 15137 tgrest 15165 dvrecap 15709 gausslemma2dlem1f1o 16064 fnmptd 16717 |
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