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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 6727 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}):𝐴⟶{𝐵}) | |
| 2 | 1 | ffnd 6669 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 {csn 4567 × cxp 5629 Fn wfn 6493 |
| 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 2708 ax-sep 5231 ax-pr 5375 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-br 5086 df-opab 5148 df-mpt 5167 df-id 5526 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-fun 6500 df-fn 6501 df-f 6502 |
| This theorem is referenced by: fconst2g 7158 ofc1 7659 ofc2 7660 caofid0l 7664 caofid0r 7665 caofid1 7666 caofid2 7667 fnsuppres 8141 fczsupp0 8143 fczfsuppd 9299 brwdom2 9488 cantnf0 9596 ofnegsub 12157 ofsubge0 12158 pwsplusgval 17454 pwsmulrval 17455 pwsvscafval 17458 pwsco1mhm 18800 dprdsubg 20001 pwsmgp 20306 pwssplit1 21054 frlmpwsfi 21732 frlmbas 21735 frlmvscaval 21748 islindf4 21818 psrascl 21957 tmdgsum2 24061 0plef 25639 0pledm 25640 itg1ge0 25653 mbfi1fseqlem5 25686 xrge0f 25698 itg2ge0 25702 itg2addlem 25725 bddibl 25807 dvidlem 25882 rolle 25957 dveq0 25967 dv11cn 25968 tdeglem4 26025 mdeg0 26035 fta1blem 26136 qaa 26289 basellem9 27052 noextendseq 27631 noetainflem4 27704 constcof 32694 fdifsuppconst 32762 elrspunidl 33488 ofcc 34250 ofcof 34251 eulerpartlemt 34515 matunitlindflem1 37937 matunitlindflem2 37938 ptrecube 37941 poimirlem1 37942 poimirlem2 37943 poimirlem3 37944 poimirlem4 37945 poimirlem5 37946 poimirlem6 37947 poimirlem7 37948 poimirlem10 37951 poimirlem11 37952 poimirlem12 37953 poimirlem16 37957 poimirlem17 37958 poimirlem19 37960 poimirlem20 37961 poimirlem22 37963 poimirlem23 37964 poimirlem28 37969 poimirlem29 37970 poimirlem31 37972 poimirlem32 37973 broucube 37975 cnpwstotbnd 38118 eqlkr2 39546 fsuppssind 43026 pwssplit4 43517 mpaaeu 43578 rngunsnply 43597 ofoaid1 43786 ofoaid2 43787 naddcnffo 43792 ofdivrec 44753 dvconstbi 44761 zlmodzxzscm 48833 nelsubclem 49542 aacllem 50276 |
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