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Mirrors > Home > MPE Home > Th. List > fdmfifsupp | 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 |
---|---|
fdmfisuppfi.f | ⊢ (𝜑 → 𝐹:𝐷⟶𝑅) |
fdmfisuppfi.d | ⊢ (𝜑 → 𝐷 ∈ Fin) |
fdmfisuppfi.z | ⊢ (𝜑 → 𝑍 ∈ 𝑉) |
Ref | Expression |
---|---|
fdmfifsupp | ⊢ (𝜑 → 𝐹 finSupp 𝑍) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fdmfisuppfi.f | . . 3 ⊢ (𝜑 → 𝐹:𝐷⟶𝑅) | |
2 | 1 | ffund 6751 | . 2 ⊢ (𝜑 → Fun 𝐹) |
3 | fdmfisuppfi.d | . . 3 ⊢ (𝜑 → 𝐷 ∈ Fin) | |
4 | fdmfisuppfi.z | . . 3 ⊢ (𝜑 → 𝑍 ∈ 𝑉) | |
5 | 1, 3, 4 | fdmfisuppfi 9443 | . 2 ⊢ (𝜑 → (𝐹 supp 𝑍) ∈ Fin) |
6 | 1 | ffnd 6748 | . . . 4 ⊢ (𝜑 → 𝐹 Fn 𝐷) |
7 | fnex 7254 | . . . 4 ⊢ ((𝐹 Fn 𝐷 ∧ 𝐷 ∈ Fin) → 𝐹 ∈ V) | |
8 | 6, 3, 7 | syl2anc 583 | . . 3 ⊢ (𝜑 → 𝐹 ∈ V) |
9 | isfsupp 9435 | . . 3 ⊢ ((𝐹 ∈ V ∧ 𝑍 ∈ 𝑉) → (𝐹 finSupp 𝑍 ↔ (Fun 𝐹 ∧ (𝐹 supp 𝑍) ∈ Fin))) | |
10 | 8, 4, 9 | syl2anc 583 | . 2 ⊢ (𝜑 → (𝐹 finSupp 𝑍 ↔ (Fun 𝐹 ∧ (𝐹 supp 𝑍) ∈ Fin))) |
11 | 2, 5, 10 | mpbir2and 712 | 1 ⊢ (𝜑 → 𝐹 finSupp 𝑍) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2108 Vcvv 3488 class class class wbr 5166 Fun wfun 6567 Fn wfn 6568 ⟶wf 6569 (class class class)co 7448 supp csupp 8201 Fincfn 9003 finSupp cfsupp 9431 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-rep 5303 ax-sep 5317 ax-nul 5324 ax-pr 5447 ax-un 7770 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-ral 3068 df-rex 3077 df-reu 3389 df-rab 3444 df-v 3490 df-sbc 3805 df-csb 3922 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-pss 3996 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-iun 5017 df-br 5167 df-opab 5229 df-mpt 5250 df-tr 5284 df-id 5593 df-eprel 5599 df-po 5607 df-so 5608 df-fr 5652 df-we 5654 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-rn 5711 df-res 5712 df-ima 5713 df-ord 6398 df-on 6399 df-lim 6400 df-suc 6401 df-iota 6525 df-fun 6575 df-fn 6576 df-f 6577 df-f1 6578 df-fo 6579 df-f1o 6580 df-fv 6581 df-ov 7451 df-oprab 7452 df-mpo 7453 df-om 7904 df-supp 8202 df-1o 8522 df-en 9004 df-fin 9007 df-fsupp 9432 |
This theorem is referenced by: fsuppmptdm 9445 fndmfifsupp 9447 gsumreidx 19959 gsummptfif1o 20010 frlmfibas 21805 elfilspd 21846 rhmpsrlem1 21983 tmdgsum 24124 tsmslem1 24158 tsmssubm 24172 tsmsres 24173 tsmsf1o 24174 tsmsmhm 24175 tsmsadd 24176 tsmsxplem1 24182 tsmsxplem2 24183 imasdsf1olem 24404 xrge0gsumle 24874 xrge0tsms 24875 rrxbasefi 25463 ehlbase 25468 jensenlem2 27049 jensen 27050 amgmlem 27051 amgm 27052 wilthlem2 27130 wilthlem3 27131 wrdfsupp 32903 xrge0tsmsd 33041 gsumle 33074 linds2eq 33374 elrspunidl 33421 rprmdvdsprod 33527 esumpfinvalf 34040 k0004ss2 44114 sge0tsms 46301 fsuppmptdmf 48106 linccl 48143 lcosn0 48149 islinindfis 48178 snlindsntor 48200 ldepspr 48202 zlmodzxzldeplem2 48230 amgmwlem 48896 amgmlemALT 48897 |
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