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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 3146 | . . . . 5 ⊢ (𝜑 → ∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵) |
3 | eqid 2732 | . . . . . 6 ⊢ (𝑘 ∈ ℕ0 ↦ 𝐶) = (𝑘 ∈ ℕ0 ↦ 𝐶) | |
4 | 3 | fnmpt 6690 | . . . . 5 ⊢ (∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵 → (𝑘 ∈ ℕ0 ↦ 𝐶) Fn ℕ0) |
5 | 2, 4 | syl 17 | . . . 4 ⊢ (𝜑 → (𝑘 ∈ ℕ0 ↦ 𝐶) Fn ℕ0) |
6 | nn0ex 12477 | . . . . 5 ⊢ ℕ0 ∈ V | |
7 | 6 | a1i 11 | . . . 4 ⊢ (𝜑 → ℕ0 ∈ V) |
8 | mptnn0fsupp.0 | . . . . 5 ⊢ (𝜑 → 0 ∈ 𝑉) | |
9 | 8 | elexd 3494 | . . . 4 ⊢ (𝜑 → 0 ∈ V) |
10 | suppvalfn 8153 | . . . 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 1371 | . . 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 2944 | . . . . . . . . 9 ⊢ (¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ↔ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = 0 ) | |
14 | simpr 485 | . . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → 𝑥 ∈ ℕ0) | |
15 | 2 | ad2antrr 724 | . . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵) |
16 | rspcsbela 4435 | . . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℕ0 ∧ ∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵) → ⦋𝑥 / 𝑘⦌𝐶 ∈ 𝐵) | |
17 | 14, 15, 16 | syl2anc 584 | . . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ⦋𝑥 / 𝑘⦌𝐶 ∈ 𝐵) |
18 | 3 | fvmpts 7001 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℕ0 ∧ ⦋𝑥 / 𝑘⦌𝐶 ∈ 𝐵) → ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = ⦋𝑥 / 𝑘⦌𝐶) |
19 | 14, 17, 18 | syl2anc 584 | . . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = ⦋𝑥 / 𝑘⦌𝐶) |
20 | 19 | eqeq1d 2734 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → (((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = 0 ↔ ⦋𝑥 / 𝑘⦌𝐶 = 0 )) |
21 | 13, 20 | bitrid 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 3175 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑠 ∈ ℕ0) → (∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ) ↔ ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ⦋𝑥 / 𝑘⦌𝐶 = 0 ))) |
24 | 23 | rexbidva 3176 | . . . . 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 13950 | . . . 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 2833 | . 2 ⊢ (𝜑 → ((𝑘 ∈ ℕ0 ↦ 𝐶) supp 0 ) ∈ Fin) |
29 | funmpt 6586 | . . 3 ⊢ Fun (𝑘 ∈ ℕ0 ↦ 𝐶) | |
30 | 6 | mptex 7224 | . . 3 ⊢ (𝑘 ∈ ℕ0 ↦ 𝐶) ∈ V |
31 | funisfsupp 9366 | . . 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 1465 | . 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 396 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∀wral 3061 ∃wrex 3070 {crab 3432 Vcvv 3474 ⦋csb 3893 class class class wbr 5148 ↦ cmpt 5231 Fun wfun 6537 Fn wfn 6538 ‘cfv 6543 (class class class)co 7408 supp csupp 8145 Fincfn 8938 finSupp cfsupp 9360 < clt 11247 ℕ0cn0 12471 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7364 df-ov 7411 df-oprab 7412 df-mpo 7413 df-om 7855 df-1st 7974 df-2nd 7975 df-supp 8146 df-frecs 8265 df-wrecs 8296 df-recs 8370 df-rdg 8409 df-1o 8465 df-er 8702 df-en 8939 df-dom 8940 df-sdom 8941 df-fin 8942 df-fsupp 9361 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-nn 12212 df-n0 12472 df-z 12558 df-uz 12822 df-fz 13484 |
This theorem is referenced by: mptnn0fsuppd 13962 mptcoe1fsupp 21738 mptcoe1matfsupp 22303 pm2mp 22326 chfacffsupp 22357 chfacfscmulfsupp 22360 chfacfpmmulfsupp 22364 cayhamlem4 22389 ply1mulgsumlem3 47059 ply1mulgsumlem4 47060 |
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