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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 6767 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}):𝐴⟶{𝐵}) | |
| 2 | 1 | ffnd 6708 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2143 {csn 4590 × cxp 5661 Fn wfn 6533 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-pr 5406 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-br 5111 df-opab 5175 df-mpt 5194 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-fun 6540 df-fn 6541 df-f 6542 |
| This theorem is referenced by: fconst2g 7203 ofc1 7704 ofc2 7705 caofid0l 7709 caofid0r 7710 caofid1 7711 caofid2 7712 fnsuppres 8188 fczsupp0 8190 fczfsuppd 9347 brwdom2 9536 cantnf0 9645 ofnegsub 12217 ofsubge0 12218 pwsplusgval 17545 pwsmulrval 17546 pwsvscafval 17549 pwsco1mhm 18892 dprdsubg 20097 pwsmgp 20409 pwssplit1 21161 frlmpwsfi 21883 frlmbas 21886 frlmvscaval 21899 islindf4 21969 psrascl 22109 tmdgsum2 24234 0plef 25812 0pledm 25813 itg1ge0 25826 mbfi1fseqlem5 25859 xrge0f 25871 itg2ge0 25875 itg2addlem 25898 bddibl 25980 dvidlem 26055 rolle 26130 dveq0 26140 dv11cn 26141 tdeglem4 26198 mdeg0 26208 fta1blem 26309 qaa 26465 basellem9 27231 noextendseq 27809 noetainflem4 27882 constcof 32944 fdifsuppconst 33012 elrspunidl 33714 ofcc 34474 ofcof 34475 eulerpartlemt 34739 matunitlindflem1 38245 matunitlindflem2 38246 ptrecube 38249 poimirlem1 38250 poimirlem2 38251 poimirlem3 38252 poimirlem4 38253 poimirlem5 38254 poimirlem6 38255 poimirlem7 38256 poimirlem10 38259 poimirlem11 38260 poimirlem12 38261 poimirlem16 38265 poimirlem17 38266 poimirlem19 38268 poimirlem20 38269 poimirlem22 38271 poimirlem23 38272 poimirlem28 38277 poimirlem29 38278 poimirlem31 38280 poimirlem32 38281 broucube 38283 cnpwstotbnd 38426 eqlkr2 39852 fsuppssind 43305 pwssplit4 43796 mpaaeu 43857 rngunsnply 43876 ofoaid1 44065 ofoaid2 44066 naddcnffo 44071 ofdivrec 45016 dvconstbi 45024 zlmodzxzscm 49114 nelsubclem 49822 aacllem 50578 |
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