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| Mirrors > Home > MPE Home > Th. List > fnconstg | Structured version Visualization version GIF version | ||
| Description: A Cartesian product with a singleton is a constant function. (Contributed by NM, 24-Jul-2014.) |
| Ref | Expression |
|---|---|
| fnconstg | ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fconstg 6721 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}):𝐴⟶{𝐵}) | |
| 2 | 1 | ffnd 6663 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2113 {csn 4580 × cxp 5622 Fn wfn 6487 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2184 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pr 5377 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-mpt 5180 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-fun 6494 df-fn 6495 df-f 6496 |
| This theorem is referenced by: fconst2g 7149 ofc1 7650 ofc2 7651 caofid0l 7655 caofid0r 7656 caofid1 7657 caofid2 7658 fnsuppres 8133 fczsupp0 8135 fczfsuppd 9289 brwdom2 9478 cantnf0 9584 ofnegsub 12143 ofsubge0 12144 pwsplusgval 17411 pwsmulrval 17412 pwsvscafval 17415 pwsco1mhm 18757 dprdsubg 19955 pwsmgp 20262 pwssplit1 21011 frlmpwsfi 21707 frlmbas 21710 frlmvscaval 21723 islindf4 21793 psrascl 21934 tmdgsum2 24040 0plef 25629 0pledm 25630 itg1ge0 25643 mbfi1fseqlem5 25676 xrge0f 25688 itg2ge0 25692 itg2addlem 25715 bddibl 25797 dvidlem 25872 rolle 25950 dveq0 25961 dv11cn 25962 tdeglem4 26021 mdeg0 26031 fta1blem 26132 qaa 26287 basellem9 27055 noextendseq 27635 noetainflem4 27708 constcof 32699 fdifsuppconst 32768 elrspunidl 33509 ofcc 34263 ofcof 34264 eulerpartlemt 34528 matunitlindflem1 37813 matunitlindflem2 37814 ptrecube 37817 poimirlem1 37818 poimirlem2 37819 poimirlem3 37820 poimirlem4 37821 poimirlem5 37822 poimirlem6 37823 poimirlem7 37824 poimirlem10 37827 poimirlem11 37828 poimirlem12 37829 poimirlem16 37833 poimirlem17 37834 poimirlem19 37836 poimirlem20 37837 poimirlem22 37839 poimirlem23 37840 poimirlem28 37845 poimirlem29 37846 poimirlem31 37848 poimirlem32 37849 broucube 37851 cnpwstotbnd 37994 eqlkr2 39356 fsuppssind 42832 pwssplit4 43327 mpaaeu 43388 rngunsnply 43407 ofoaid1 43596 ofoaid2 43597 naddcnffo 43602 ofdivrec 44563 dvconstbi 44571 zlmodzxzscm 48599 nelsubclem 49308 aacllem 50042 |
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