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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 3158 | . . . . 5 ⊢ (𝜑 → ∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵) |
| 3 | eqid 2763 | . . . . . 6 ⊢ (𝑘 ∈ ℕ0 ↦ 𝐶) = (𝑘 ∈ ℕ0 ↦ 𝐶) | |
| 4 | 3 | fnmpt 6709 | . . . . 5 ⊢ (∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵 → (𝑘 ∈ ℕ0 ↦ 𝐶) Fn ℕ0) |
| 5 | 2, 4 | syl 18 | . . . 4 ⊢ (𝜑 → (𝑘 ∈ ℕ0 ↦ 𝐶) Fn ℕ0) |
| 6 | nn0ex 12652 | . . . . 5 ⊢ ℕ0 ∈ V | |
| 7 | 6 | a1i 11 | . . . 4 ⊢ (𝜑 → ℕ0 ∈ V) |
| 8 | mptnn0fsupp.0 | . . . . 5 ⊢ (𝜑 → 0 ∈ 𝑉) | |
| 9 | 8 | elexd 3477 | . . . 4 ⊢ (𝜑 → 0 ∈ V) |
| 10 | suppvalfn 8223 | . . . 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 1399 | . . 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 2963 | . . . . . . . . 9 ⊢ (¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ↔ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = 0 ) | |
| 14 | simpr 490 | . . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → 𝑥 ∈ ℕ0) | |
| 15 | 2 | ad2antrr 739 | . . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵) |
| 16 | rspcsbela 4399 | . . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℕ0 ∧ ∀𝑘 ∈ ℕ0 𝐶 ∈ 𝐵) → ⦋𝑥 / 𝑘⦌𝐶 ∈ 𝐵) | |
| 17 | 14, 15, 16 | syl2anc 596 | . . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ⦋𝑥 / 𝑘⦌𝐶 ∈ 𝐵) |
| 18 | 3 | fvmpts 7028 | . . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℕ0 ∧ ⦋𝑥 / 𝑘⦌𝐶 ∈ 𝐵) → ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = ⦋𝑥 / 𝑘⦌𝐶) |
| 19 | 14, 17, 18 | syl2anc 596 | . . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = ⦋𝑥 / 𝑘⦌𝐶) |
| 20 | 19 | eqeq1d 2765 | . . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → (((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) = 0 ↔ ⦋𝑥 / 𝑘⦌𝐶 = 0 )) |
| 21 | 13, 20 | bitrid 286 | . . . . . . . 8 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → (¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ↔ ⦋𝑥 / 𝑘⦌𝐶 = 0 )) |
| 22 | 21 | imbi2d 343 | . . . . . . 7 ⊢ (((𝜑 ∧ 𝑠 ∈ ℕ0) ∧ 𝑥 ∈ ℕ0) → ((𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ) ↔ (𝑠 < 𝑥 → ⦋𝑥 / 𝑘⦌𝐶 = 0 ))) |
| 23 | 22 | ralbidva 3187 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑠 ∈ ℕ0) → (∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 ) ↔ ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ⦋𝑥 / 𝑘⦌𝐶 = 0 ))) |
| 24 | 23 | rexbidva 3188 | . . . . 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 260 | . . . 4 ⊢ (𝜑 → ∃𝑠 ∈ ℕ0 ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 )) |
| 26 | rabssnn0fi 14169 | . . . 4 ⊢ ({𝑥 ∈ ℕ0 ∣ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 } ∈ Fin ↔ ∃𝑠 ∈ ℕ0 ∀𝑥 ∈ ℕ0 (𝑠 < 𝑥 → ¬ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 )) | |
| 27 | 25, 26 | sylibr 237 | . . 3 ⊢ (𝜑 → {𝑥 ∈ ℕ0 ∣ ((𝑘 ∈ ℕ0 ↦ 𝐶)‘𝑥) ≠ 0 } ∈ Fin) |
| 28 | 11, 27 | eqeltrd 2864 | . 2 ⊢ (𝜑 → ((𝑘 ∈ ℕ0 ↦ 𝐶) supp 0 ) ∈ Fin) |
| 29 | funmpt 6606 | . . 3 ⊢ Fun (𝑘 ∈ ℕ0 ↦ 𝐶) | |
| 30 | 6 | mptex 7260 | . . 3 ⊢ (𝑘 ∈ ℕ0 ↦ 𝐶) ∈ V |
| 31 | funisfsupp 9397 | . . 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 1495 | . 2 ⊢ (𝜑 → ((𝑘 ∈ ℕ0 ↦ 𝐶) finSupp 0 ↔ ((𝑘 ∈ ℕ0 ↦ 𝐶) supp 0 ) ∈ Fin)) |
| 33 | 28, 32 | mpbird 260 | 1 ⊢ (𝜑 → (𝑘 ∈ ℕ0 ↦ 𝐶) finSupp 0 ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 ≠ wne 2959 ∀wral 3080 ∃wrex 3090 {crab 3416 Vcvv 3454 ⦋csb 3851 class class class wbr 5108 ↦ cmpt 5192 Fun wfun 6560 Fn wfn 6561 ‘cfv 6566 (class class class)co 7451 supp csupp 8214 Fincfn 9011 finSupp cfsupp 9391 < clt 11382 ℕ0cn0 12646 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-om 7912 df-1st 8035 df-2nd 8036 df-supp 8215 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-1o 8514 df-er 8755 df-en 9012 df-dom 9013 df-sdom 9014 df-fin 9015 df-fsupp 9392 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-nn 12376 df-n0 12647 df-z 12734 df-uz 13006 df-fz 13680 |
| This theorem is used by: mptnn0fsuppd 14181 mptcoe1fsupp 22588 mptcoe1matfsupp 23175 pm2mp 23198 chfacffsupp 23229 chfacfscmulfsupp 23232 chfacfpmmulfsupp 23236 cayhamlem4 23261 ply1mulgsumlem3 49831 ply1mulgsumlem4 49832 |
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