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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 6723 | . . 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 9392 | 1 ⊢ (𝜑 → 𝐹 finSupp 𝑍) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2109 class class class wbr 5124 ran crn 5660 Fn wfn 6531 ⟶wf 6532 Fincfn 8964 finSupp cfsupp 9378 |
| 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 2708 ax-rep 5254 ax-sep 5271 ax-nul 5281 ax-pr 5407 ax-un 7734 |
| 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 2540 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2810 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3062 df-reu 3365 df-rab 3421 df-v 3466 df-sbc 3771 df-csb 3880 df-dif 3934 df-un 3936 df-in 3938 df-ss 3948 df-pss 3951 df-nul 4314 df-if 4506 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4889 df-iun 4974 df-br 5125 df-opab 5187 df-mpt 5207 df-tr 5235 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-ov 7413 df-oprab 7414 df-mpo 7415 df-om 7867 df-supp 8165 df-1o 8485 df-en 8965 df-fin 8968 df-fsupp 9379 |
| This theorem is referenced by: resfifsupp 9414 gsummptcl 19953 psdmul 22109 esumgsum 34081 gsumesum 34095 matunitlindflem1 37645 matunitlindflem2 37646 |
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