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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 6719 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}):𝐴⟶{𝐵}) | |
| 2 | 1 | ffnd 6661 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐴 × {𝐵}) Fn 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 {csn 4568 × cxp 5620 Fn wfn 6485 |
| 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 5368 |
| 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 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-fun 6492 df-fn 6493 df-f 6494 |
| This theorem is referenced by: fconst2g 7149 ofc1 7650 ofc2 7651 caofid0l 7655 caofid0r 7656 caofid1 7657 caofid2 7658 fnsuppres 8132 fczsupp0 8134 fczfsuppd 9290 brwdom2 9479 cantnf0 9585 ofnegsub 12144 ofsubge0 12145 pwsplusgval 17412 pwsmulrval 17413 pwsvscafval 17416 pwsco1mhm 18758 dprdsubg 19959 pwsmgp 20264 pwssplit1 21013 frlmpwsfi 21709 frlmbas 21712 frlmvscaval 21725 islindf4 21795 psrascl 21935 tmdgsum2 24039 0plef 25617 0pledm 25618 itg1ge0 25631 mbfi1fseqlem5 25664 xrge0f 25676 itg2ge0 25680 itg2addlem 25703 bddibl 25785 dvidlem 25860 rolle 25935 dveq0 25946 dv11cn 25947 tdeglem4 26006 mdeg0 26016 fta1blem 26117 qaa 26271 basellem9 27039 noextendseq 27619 noetainflem4 27692 constcof 32683 fdifsuppconst 32751 elrspunidl 33493 ofcc 34256 ofcof 34257 eulerpartlemt 34521 matunitlindflem1 37928 matunitlindflem2 37929 ptrecube 37932 poimirlem1 37933 poimirlem2 37934 poimirlem3 37935 poimirlem4 37936 poimirlem5 37937 poimirlem6 37938 poimirlem7 37939 poimirlem10 37942 poimirlem11 37943 poimirlem12 37944 poimirlem16 37948 poimirlem17 37949 poimirlem19 37951 poimirlem20 37952 poimirlem22 37954 poimirlem23 37955 poimirlem28 37960 poimirlem29 37961 poimirlem31 37963 poimirlem32 37964 broucube 37966 cnpwstotbnd 38109 eqlkr2 39537 fsuppssind 43025 pwssplit4 43520 mpaaeu 43581 rngunsnply 43600 ofoaid1 43789 ofoaid2 43790 naddcnffo 43795 ofdivrec 44756 dvconstbi 44764 zlmodzxzscm 48791 nelsubclem 49500 aacllem 50234 |
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