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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 6729 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}):𝐴⟶{𝐵}) | |
| 2 | 1 | ffnd 6671 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 {csn 4582 × cxp 5630 Fn wfn 6495 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-pr 5379 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-br 5101 df-opab 5163 df-mpt 5182 df-id 5527 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-fun 6502 df-fn 6503 df-f 6504 |
| This theorem is referenced by: fconst2g 7159 ofc1 7660 ofc2 7661 caofid0l 7665 caofid0r 7666 caofid1 7667 caofid2 7668 fnsuppres 8143 fczsupp0 8145 fczfsuppd 9301 brwdom2 9490 cantnf0 9596 ofnegsub 12155 ofsubge0 12156 pwsplusgval 17423 pwsmulrval 17424 pwsvscafval 17427 pwsco1mhm 18769 dprdsubg 19967 pwsmgp 20274 pwssplit1 21023 frlmpwsfi 21719 frlmbas 21722 frlmvscaval 21735 islindf4 21805 psrascl 21946 tmdgsum2 24052 0plef 25641 0pledm 25642 itg1ge0 25655 mbfi1fseqlem5 25688 xrge0f 25700 itg2ge0 25704 itg2addlem 25727 bddibl 25809 dvidlem 25884 rolle 25962 dveq0 25973 dv11cn 25974 tdeglem4 26033 mdeg0 26043 fta1blem 26144 qaa 26299 basellem9 27067 noextendseq 27647 noetainflem4 27720 constcof 32710 fdifsuppconst 32778 elrspunidl 33520 ofcc 34283 ofcof 34284 eulerpartlemt 34548 matunitlindflem1 37861 matunitlindflem2 37862 ptrecube 37865 poimirlem1 37866 poimirlem2 37867 poimirlem3 37868 poimirlem4 37869 poimirlem5 37870 poimirlem6 37871 poimirlem7 37872 poimirlem10 37875 poimirlem11 37876 poimirlem12 37877 poimirlem16 37881 poimirlem17 37882 poimirlem19 37884 poimirlem20 37885 poimirlem22 37887 poimirlem23 37888 poimirlem28 37893 poimirlem29 37894 poimirlem31 37896 poimirlem32 37897 broucube 37899 cnpwstotbnd 38042 eqlkr2 39470 fsuppssind 42945 pwssplit4 43440 mpaaeu 43501 rngunsnply 43520 ofoaid1 43709 ofoaid2 43710 naddcnffo 43715 ofdivrec 44676 dvconstbi 44684 zlmodzxzscm 48711 nelsubclem 49420 aacllem 50154 |
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