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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 6721 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}):𝐴⟶{𝐵}) | |
| 2 | 1 | ffnd 6663 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 {csn 4568 × cxp 5622 Fn wfn 6487 |
| 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 2709 ax-sep 5231 ax-pr 5370 |
| 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 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-fun 6494 df-fn 6495 df-f 6496 |
| This theorem is referenced by: fconst2g 7151 ofc1 7652 ofc2 7653 caofid0l 7657 caofid0r 7658 caofid1 7659 caofid2 7660 fnsuppres 8134 fczsupp0 8136 fczfsuppd 9292 brwdom2 9481 cantnf0 9587 ofnegsub 12148 ofsubge0 12149 pwsplusgval 17445 pwsmulrval 17446 pwsvscafval 17449 pwsco1mhm 18791 dprdsubg 19992 pwsmgp 20297 pwssplit1 21046 frlmpwsfi 21742 frlmbas 21745 frlmvscaval 21758 islindf4 21828 psrascl 21967 tmdgsum2 24071 0plef 25649 0pledm 25650 itg1ge0 25663 mbfi1fseqlem5 25696 xrge0f 25708 itg2ge0 25712 itg2addlem 25735 bddibl 25817 dvidlem 25892 rolle 25967 dveq0 25977 dv11cn 25978 tdeglem4 26035 mdeg0 26045 fta1blem 26146 qaa 26300 basellem9 27066 noextendseq 27645 noetainflem4 27718 constcof 32709 fdifsuppconst 32777 elrspunidl 33503 ofcc 34266 ofcof 34267 eulerpartlemt 34531 matunitlindflem1 37951 matunitlindflem2 37952 ptrecube 37955 poimirlem1 37956 poimirlem2 37957 poimirlem3 37958 poimirlem4 37959 poimirlem5 37960 poimirlem6 37961 poimirlem7 37962 poimirlem10 37965 poimirlem11 37966 poimirlem12 37967 poimirlem16 37971 poimirlem17 37972 poimirlem19 37974 poimirlem20 37975 poimirlem22 37977 poimirlem23 37978 poimirlem28 37983 poimirlem29 37984 poimirlem31 37986 poimirlem32 37987 broucube 37989 cnpwstotbnd 38132 eqlkr2 39560 fsuppssind 43040 pwssplit4 43535 mpaaeu 43596 rngunsnply 43615 ofoaid1 43804 ofoaid2 43805 naddcnffo 43810 ofdivrec 44771 dvconstbi 44779 zlmodzxzscm 48845 nelsubclem 49554 aacllem 50288 |
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