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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 6540 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}):𝐴⟶{𝐵}) | |
2 | 1 | ffnd 6488 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2111 {csn 4525 × cxp 5517 Fn wfn 6319 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pr 5295 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-ral 3111 df-v 3443 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 df-br 5031 df-opab 5093 df-mpt 5111 df-id 5425 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-fun 6326 df-fn 6327 df-f 6328 |
This theorem is referenced by: fconst2g 6942 ofc1 7412 ofc2 7413 caofid0l 7417 caofid0r 7418 caofid1 7419 caofid2 7420 fnsuppres 7840 fczsupp0 7842 fczfsuppd 8835 brwdom2 9021 cantnf0 9122 ofnegsub 11623 ofsubge0 11624 pwsplusgval 16755 pwsmulrval 16756 pwsvscafval 16759 pwsco1mhm 17988 dprdsubg 19139 pwsmgp 19364 pwssplit1 19824 frlmpwsfi 20441 frlmbas 20444 frlmvscaval 20457 islindf4 20527 tmdgsum2 22701 0plef 24276 0pledm 24277 itg1ge0 24290 mbfi1fseqlem5 24323 xrge0f 24335 itg2ge0 24339 itg2addlem 24362 bddibl 24443 dvidlem 24518 rolle 24593 dveq0 24603 dv11cn 24604 tdeglem4 24661 mdeg0 24671 fta1blem 24769 qaa 24919 basellem9 25674 fdifsuppconst 30449 elrspunidl 31014 ofcc 31475 ofcof 31476 eulerpartlemt 31739 noextendseq 33287 matunitlindflem1 35053 matunitlindflem2 35054 ptrecube 35057 poimirlem1 35058 poimirlem2 35059 poimirlem3 35060 poimirlem4 35061 poimirlem5 35062 poimirlem6 35063 poimirlem7 35064 poimirlem10 35067 poimirlem11 35068 poimirlem12 35069 poimirlem16 35073 poimirlem17 35074 poimirlem19 35076 poimirlem20 35077 poimirlem22 35079 poimirlem23 35080 poimirlem28 35085 poimirlem29 35086 poimirlem31 35088 poimirlem32 35089 broucube 35091 cnpwstotbnd 35235 eqlkr2 36396 fsuppssind 39459 pwssplit4 40033 mpaaeu 40094 rngunsnply 40117 ofdivrec 41030 dvconstbi 41038 zlmodzxzscm 44759 aacllem 45329 |
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