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| Mirrors > Home > MPE Home > Th. List > fndmfifsupp | Structured version Visualization version GIF version | ||
| Description: A function with a finite domain is always finitely supported. (Contributed by AV, 25-May-2019.) |
| Ref | Expression |
|---|---|
| fndmfisuppfi.f | ⊢ (𝜑 → 𝐹 Fn 𝐷) |
| fndmfisuppfi.d | ⊢ (𝜑 → 𝐷 ∈ Fin) |
| fndmfisuppfi.z | ⊢ (𝜑 → 𝑍 ∈ 𝑉) |
| Ref | Expression |
|---|---|
| fndmfifsupp | ⊢ (𝜑 → 𝐹 finSupp 𝑍) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fndmfisuppfi.f | . . 3 ⊢ (𝜑 → 𝐹 Fn 𝐷) | |
| 2 | dffn3 6700 | . . 3 ⊢ (𝐹 Fn 𝐷 ↔ 𝐹:𝐷⟶ran 𝐹) | |
| 3 | 1, 2 | sylib 218 | . 2 ⊢ (𝜑 → 𝐹:𝐷⟶ran 𝐹) |
| 4 | fndmfisuppfi.d | . 2 ⊢ (𝜑 → 𝐷 ∈ Fin) | |
| 5 | fndmfisuppfi.z | . 2 ⊢ (𝜑 → 𝑍 ∈ 𝑉) | |
| 6 | 3, 4, 5 | fdmfifsupp 9326 | 1 ⊢ (𝜑 → 𝐹 finSupp 𝑍) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2109 class class class wbr 5107 ran crn 5639 Fn wfn 6506 ⟶wf 6507 Fincfn 8918 finSupp cfsupp 9312 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5234 ax-sep 5251 ax-nul 5261 ax-pr 5387 ax-un 7711 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-ov 7390 df-oprab 7391 df-mpo 7392 df-om 7843 df-supp 8140 df-1o 8434 df-en 8919 df-fin 8922 df-fsupp 9313 |
| This theorem is referenced by: resfifsupp 9348 gsummptcl 19897 psdmul 22053 esumgsum 34035 gsumesum 34049 matunitlindflem1 37610 matunitlindflem2 37611 |
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