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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 6566 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}):𝐴⟶{𝐵}) | |
2 | 1 | ffnd 6515 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2114 {csn 4567 × cxp 5553 Fn wfn 6350 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rab 3147 df-v 3496 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-fun 6357 df-fn 6358 df-f 6359 |
This theorem is referenced by: fconst2g 6965 ofc1 7432 ofc2 7433 caofid0l 7437 caofid0r 7438 caofid1 7439 caofid2 7440 fnsuppres 7857 fczsupp0 7859 fczfsuppd 8851 brwdom2 9037 cantnf0 9138 ofnegsub 11636 ofsubge0 11637 pwsplusgval 16763 pwsmulrval 16764 pwsvscafval 16767 pwsco1mhm 17996 dprdsubg 19146 pwsmgp 19368 pwssplit1 19831 frlmpwsfi 20896 frlmbas 20899 frlmvscaval 20912 islindf4 20982 tmdgsum2 22704 0plef 24273 0pledm 24274 itg1ge0 24287 mbfi1fseqlem5 24320 xrge0f 24332 itg2ge0 24336 itg2addlem 24359 bddibl 24440 dvidlem 24513 rolle 24587 dveq0 24597 dv11cn 24598 tdeglem4 24654 mdeg0 24664 fta1blem 24762 qaa 24912 basellem9 25666 ofcc 31365 ofcof 31366 eulerpartlemt 31629 noextendseq 33174 matunitlindflem1 34903 matunitlindflem2 34904 ptrecube 34907 poimirlem1 34908 poimirlem2 34909 poimirlem3 34910 poimirlem4 34911 poimirlem5 34912 poimirlem6 34913 poimirlem7 34914 poimirlem10 34917 poimirlem11 34918 poimirlem12 34919 poimirlem16 34923 poimirlem17 34924 poimirlem19 34926 poimirlem20 34927 poimirlem22 34929 poimirlem23 34930 poimirlem28 34935 poimirlem29 34936 poimirlem31 34938 poimirlem32 34939 broucube 34941 cnpwstotbnd 35090 eqlkr2 36251 pwssplit4 39709 mpaaeu 39770 rngunsnply 39793 ofdivrec 40678 dvconstbi 40686 zlmodzxzscm 44425 aacllem 44922 |
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