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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 2119 {csn 4562 × cxp 5623 Fn wfn 6487 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-pr 5369 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-sn 4563 df-pr 4565 df-op 4569 df-br 5080 df-opab 5142 df-mpt 5161 df-id 5520 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-fun 6494 df-fn 6495 df-f 6496 |
| This theorem is referenced by: fconst2g 7154 ofc1 7655 ofc2 7656 caofid0l 7660 caofid0r 7661 caofid1 7662 caofid2 7663 fnsuppres 8138 fczsupp0 8140 fczfsuppd 9296 brwdom2 9485 cantnf0 9594 ofnegsub 12155 ofsubge0 12156 pwsplusgval 17452 pwsmulrval 17453 pwsvscafval 17456 pwsco1mhm 18798 dprdsubg 19999 pwsmgp 20304 pwssplit1 21056 frlmpwsfi 21734 frlmbas 21737 frlmvscaval 21750 islindf4 21820 psrascl 21960 tmdgsum2 24086 0plef 25664 0pledm 25665 itg1ge0 25678 mbfi1fseqlem5 25711 xrge0f 25723 itg2ge0 25727 itg2addlem 25750 bddibl 25832 dvidlem 25907 rolle 25982 dveq0 25992 dv11cn 25993 tdeglem4 26050 mdeg0 26060 fta1blem 26161 qaa 26314 basellem9 27077 noextendseq 27656 noetainflem4 27729 constcof 32720 fdifsuppconst 32788 elrspunidl 33518 ofcc 34297 ofcof 34298 eulerpartlemt 34562 matunitlindflem1 37990 matunitlindflem2 37991 ptrecube 37994 poimirlem1 37995 poimirlem2 37996 poimirlem3 37997 poimirlem4 37998 poimirlem5 37999 poimirlem6 38000 poimirlem7 38001 poimirlem10 38004 poimirlem11 38005 poimirlem12 38006 poimirlem16 38010 poimirlem17 38011 poimirlem19 38013 poimirlem20 38014 poimirlem22 38016 poimirlem23 38017 poimirlem28 38022 poimirlem29 38023 poimirlem31 38025 poimirlem32 38026 broucube 38028 cnpwstotbnd 38171 eqlkr2 39599 fsuppssind 43050 pwssplit4 43541 mpaaeu 43602 rngunsnply 43621 ofoaid1 43810 ofoaid2 43811 naddcnffo 43816 ofdivrec 44777 dvconstbi 44785 zlmodzxzscm 48855 nelsubclem 49564 aacllem 50298 |
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