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Mirrors > Home > MPE Home > Th. List > mptnn0fsupp | Structured version Visualization version GIF version |
Description: A mapping from the nonnegative integers is finitely supported under certain conditions. (Contributed by AV, 5-Oct-2019.) (Revised by AV, 23-Dec-2019.) |
Ref | Expression |
---|---|
mptnn0fsupp.0 | ⊢ (𝜑 → 0 ∈ 𝑉) |
mptnn0fsupp.c | ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ0) → 𝐶 ∈ 𝐵) |
mptnn0fsupp.s | ⊢ (𝜑 → ∃𝑠 ∈ ℕ0 ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ⦋𝑥 / 𝑘⦌𝐶 = 0 )) |
Ref | Expression |
---|---|
mptnn0fsupp | ⊢ (𝜑 → (𝑘 ∈ ℕ0 ↦ 𝐶) finSupp 0 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mptnn0fsupp.c | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ0) → 𝐶 ∈ 𝐵) | |
2 | 1 | ralrimiva 3107 | . . . . 5 ⊢ (𝜑 → ∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵) |
3 | eqid 2738 | . . . . . 6 ⊢ (𝑘 ∈ ℕ0 ↦ 𝐶) = (𝑘 ∈ ℕ0 ↦ 𝐶) | |
4 | 3 | fnmpt 6557 | . . . . 5 ⊢ (∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵 → (𝑘 ∈ ℕ0 ↦ 𝐶) Fn ℕ0) |
5 | 2, 4 | syl 17 | . . . 4 ⊢ (𝜑 → (𝑘 ∈ ℕ0 ↦ 𝐶) Fn ℕ0) |
6 | nn0ex 12169 | . . . . 5 ⊢ ℕ0 ∈ V | |
7 | 6 | a1i 11 | . . . 4 ⊢ (𝜑 → ℕ0 ∈ V) |
8 | mptnn0fsupp.0 | . . . . 5 ⊢ (𝜑 → 0 ∈ 𝑉) | |
9 | 8 | elexd 3442 | . . . 4 ⊢ (𝜑 → 0 ∈ V) |
10 | suppvalfn 7956 | . . . 4 ⊢ (((𝑘 ∈ ℕ0 ↦ 𝐶) Fn ℕ0 ∧ ℕ0 ∈ V ∧ 0 ∈ V) → ((𝑘 ∈ ℕ0 ↦ 𝐶) supp 0 ) = {𝑥 ∈ ℕ0 ∣ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 }) | |
11 | 5, 7, 9, 10 | syl3anc 1369 | . . 3 ⊢ (𝜑 → ((𝑘 ∈ ℕ0 ↦ 𝐶) supp 0 ) = {𝑥 ∈ ℕ0 ∣ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 }) |
12 | mptnn0fsupp.s | . . . . 5 ⊢ (𝜑 → ∃𝑠 ∈ ℕ0 ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ⦋𝑥 / 𝑘⦌𝐶 = 0 )) | |
13 | nne 2946 | . . . . . . . . 9 ⊢ (¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ↔ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = 0 ) | |
14 | simpr 484 | . . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → 𝑥 ∈ ℕ0) | |
15 | 2 | ad2antrr 722 | . . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵) |
16 | rspcsbela 4366 | . . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℕ0 ∧ ∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵) → ⦋𝑥 / 𝑘⦌𝐶 ∈ 𝐵) | |
17 | 14, 15, 16 | syl2anc 583 | . . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ⦋𝑥 / 𝑘⦌𝐶 ∈ 𝐵) |
18 | 3 | fvmpts 6860 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℕ0 ∧ ⦋𝑥 / 𝑘⦌𝐶 ∈ 𝐵) → ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = ⦋𝑥 / 𝑘⦌𝐶) |
19 | 14, 17, 18 | syl2anc 583 | . . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = ⦋𝑥 / 𝑘⦌𝐶) |
20 | 19 | eqeq1d 2740 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → (((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = 0 ↔ ⦋𝑥 / 𝑘⦌𝐶 = 0 )) |
21 | 13, 20 | syl5bb 282 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → (¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ↔ ⦋𝑥 / 𝑘⦌𝐶 = 0 )) |
22 | 21 | imbi2d 340 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ((𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ) ↔ (𝑠 < 𝑥 → ⦋𝑥 / 𝑘⦌𝐶 = 0 ))) |
23 | 22 | ralbidva 3119 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑠 ∈ ℕ0) → (∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ) ↔ ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ⦋𝑥 / 𝑘⦌𝐶 = 0 ))) |
24 | 23 | rexbidva 3224 | . . . . 5 ⊢ (𝜑 → (∃𝑠 ∈ ℕ0 ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ) ↔ ∃𝑠 ∈ ℕ0 ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ⦋𝑥 / 𝑘⦌𝐶 = 0 ))) |
25 | 12, 24 | mpbird 256 | . . . 4 ⊢ (𝜑 → ∃𝑠 ∈ ℕ0 ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 )) |
26 | rabssnn0fi 13634 | . . . 4 ⊢ ({𝑥 ∈ ℕ0 ∣ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 } ∈ Fin ↔ ∃𝑠 ∈ ℕ0 ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 )) | |
27 | 25, 26 | sylibr 233 | . . 3 ⊢ (𝜑 → {𝑥 ∈ ℕ0 ∣ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 } ∈ Fin) |
28 | 11, 27 | eqeltrd 2839 | . 2 ⊢ (𝜑 → ((𝑘 ∈ ℕ0 ↦ 𝐶) supp 0 ) ∈ Fin) |
29 | funmpt 6456 | . . 3 ⊢ Fun (𝑘 ∈ ℕ0 ↦ 𝐶) | |
30 | 6 | mptex 7081 | . . 3 ⊢ (𝑘 ∈ ℕ0 ↦ 𝐶) ∈ V |
31 | funisfsupp 9063 | . . 3 ⊢ ((Fun (𝑘 ∈ ℕ0 ↦ 𝐶) ∧ (𝑘 ∈ ℕ0 ↦ 𝐶) ∈ V ∧ 0 ∈ V) → ((𝑘 ∈ ℕ0 ↦ 𝐶) finSupp 0 ↔ ((𝑘 ∈ ℕ0 ↦ 𝐶) supp 0 ) ∈ Fin)) | |
32 | 29, 30, 9, 31 | mp3an12i 1463 | . 2 ⊢ (𝜑 → ((𝑘 ∈ ℕ0 ↦ 𝐶) finSupp 0 ↔ ((𝑘 ∈ ℕ0 ↦ 𝐶) supp 0 ) ∈ Fin)) |
33 | 28, 32 | mpbird 256 | 1 ⊢ (𝜑 → (𝑘 ∈ ℕ0 ↦ 𝐶) finSupp 0 ) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ≠ wne 2942 ∀wral 3063 ∃wrex 3064 {crab 3067 Vcvv 3422 ⦋csb 3828 class class class wbr 5070 ↦ cmpt 5153 Fun wfun 6412 Fn wfn 6413 ‘cfv 6418 (class class class)co 7255 supp csupp 7948 Fincfn 8691 finSupp cfsupp 9058 < clt 10940 ℕ0cn0 12163 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-rep 5205 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-supp 7949 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-1o 8267 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-fsupp 9059 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-n0 12164 df-z 12250 df-uz 12512 df-fz 13169 |
This theorem is referenced by: mptnn0fsuppd 13646 mptcoe1fsupp 21296 mptcoe1matfsupp 21859 pm2mp 21882 chfacffsupp 21913 chfacfscmulfsupp 21916 chfacfpmmulfsupp 21920 cayhamlem4 21945 ply1mulgsumlem3 45617 ply1mulgsumlem4 45618 |
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