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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 6755 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}):𝐴⟶{𝐵}) | |
| 2 | 1 | ffnd 6696 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2145 {csn 4585 × cxp 5650 Fn wfn 6520 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-pr 5395 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-sn 4586 df-pr 4588 df-op 4592 df-br 5106 df-opab 5168 df-mpt 5187 df-id 5547 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-fun 6527 df-fn 6528 df-f 6529 |
| This theorem is referenced by: fconst2g 7191 ofc1 7692 ofc2 7693 caofid0l 7697 caofid0r 7698 caofid1 7699 caofid2 7700 fnsuppres 8175 fczsupp0 8177 fczfsuppd 9334 brwdom2 9523 cantnf0 9632 ofnegsub 12207 ofsubge0 12208 pwsplusgval 17534 pwsmulrval 17535 pwsvscafval 17538 pwsco1mhm 18881 dprdsubg 20087 pwsmgp 20399 pwssplit1 21149 frlmpwsfi 21862 frlmbas 21865 frlmvscaval 21878 islindf4 21948 psrascl 22088 tmdgsum2 24214 0plef 25792 0pledm 25793 itg1ge0 25806 mbfi1fseqlem5 25839 xrge0f 25851 itg2ge0 25855 itg2addlem 25878 bddibl 25960 dvidlem 26035 rolle 26110 dveq0 26120 dv11cn 26121 tdeglem4 26178 mdeg0 26188 fta1blem 26289 qaa 26445 basellem9 27211 noextendseq 27789 noetainflem4 27862 constcof 32878 fdifsuppconst 32946 elrspunidl 33652 ofcc 34413 ofcof 34414 eulerpartlemt 34678 matunitlindflem1 38127 matunitlindflem2 38128 ptrecube 38131 poimirlem1 38132 poimirlem2 38133 poimirlem3 38134 poimirlem4 38135 poimirlem5 38136 poimirlem6 38137 poimirlem7 38138 poimirlem10 38141 poimirlem11 38142 poimirlem12 38143 poimirlem16 38147 poimirlem17 38148 poimirlem19 38150 poimirlem20 38151 poimirlem22 38153 poimirlem23 38154 poimirlem28 38159 poimirlem29 38160 poimirlem31 38162 poimirlem32 38163 broucube 38165 cnpwstotbnd 38308 eqlkr2 39736 fsuppssind 43187 pwssplit4 43678 mpaaeu 43739 rngunsnply 43758 ofoaid1 43947 ofoaid2 43948 naddcnffo 43953 ofdivrec 44900 dvconstbi 44908 zlmodzxzscm 48988 nelsubclem 49696 aacllem 50430 |
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