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| Mirrors > Home > MPE Home > Th. List > lcomfsupp | Structured version Visualization version GIF version | ||
| Description: A linear-combination sum is finitely supported if the coefficients are. (Contributed by Stefan O'Rear, 28-Feb-2015.) (Revised by AV, 15-Jul-2019.) |
| Ref | Expression |
|---|---|
| lcomf.f | ⊢ 𝐹 = (Scalar‘𝑊) |
| lcomf.k | ⊢ 𝐾 = (Base‘𝐹) |
| lcomf.s | ⊢ · = ( ·𝑠 ‘𝑊) |
| lcomf.b | ⊢ 𝐵 = (Base‘𝑊) |
| lcomf.w | ⊢ (𝜑 → 𝑊 ∈ LMod) |
| lcomf.g | ⊢ (𝜑 → 𝐺:𝐼⟶𝐾) |
| lcomf.h | ⊢ (𝜑 → 𝐻:𝐼⟶𝐵) |
| lcomf.i | ⊢ (𝜑 → 𝐼 ∈ 𝑉) |
| lcomfsupp.z | ⊢ 0 = (0g‘𝑊) |
| lcomfsupp.y | ⊢ 𝑌 = (0g‘𝐹) |
| lcomfsupp.j | ⊢ (𝜑 → 𝐺 finSupp 𝑌) |
| Ref | Expression |
|---|---|
| lcomfsupp | ⊢ (𝜑 → (𝐺 ∘f · 𝐻) finSupp 0 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lcomfsupp.j | . . . 4 ⊢ (𝜑 → 𝐺 finSupp 𝑌) | |
| 2 | 1 | fsuppimpd 9282 | . . 3 ⊢ (𝜑 → (𝐺 supp 𝑌) ∈ Fin) |
| 3 | lcomf.f | . . . . 5 ⊢ 𝐹 = (Scalar‘𝑊) | |
| 4 | lcomf.k | . . . . 5 ⊢ 𝐾 = (Base‘𝐹) | |
| 5 | lcomf.s | . . . . 5 ⊢ · = ( ·𝑠 ‘𝑊) | |
| 6 | lcomf.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑊) | |
| 7 | lcomf.w | . . . . 5 ⊢ (𝜑 → 𝑊 ∈ LMod) | |
| 8 | lcomf.g | . . . . 5 ⊢ (𝜑 → 𝐺:𝐼⟶𝐾) | |
| 9 | lcomf.h | . . . . 5 ⊢ (𝜑 → 𝐻:𝐼⟶𝐵) | |
| 10 | lcomf.i | . . . . 5 ⊢ (𝜑 → 𝐼 ∈ 𝑉) | |
| 11 | 3, 4, 5, 6, 7, 8, 9, 10 | lcomf 20896 | . . . 4 ⊢ (𝜑 → (𝐺 ∘f · 𝐻):𝐼⟶𝐵) |
| 12 | eldifi 4071 | . . . . . 6 ⊢ (𝑥 ∈ (𝐼 ∖ (𝐺 supp 𝑌)) → 𝑥 ∈ 𝐼) | |
| 13 | 8 | ffnd 6669 | . . . . . . . 8 ⊢ (𝜑 → 𝐺 Fn 𝐼) |
| 14 | 13 | adantr 480 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → 𝐺 Fn 𝐼) |
| 15 | 9 | ffnd 6669 | . . . . . . . 8 ⊢ (𝜑 → 𝐻 Fn 𝐼) |
| 16 | 15 | adantr 480 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → 𝐻 Fn 𝐼) |
| 17 | 10 | adantr 480 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → 𝐼 ∈ 𝑉) |
| 18 | simpr 484 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → 𝑥 ∈ 𝐼) | |
| 19 | fnfvof 7648 | . . . . . . 7 ⊢ (((𝐺 Fn 𝐼 ∧ 𝐻 Fn 𝐼) ∧ (𝐼 ∈ 𝑉 ∧ 𝑥 ∈ 𝐼)) → ((𝐺 ∘f · 𝐻)‘𝑥) = ((𝐺‘𝑥) · (𝐻‘𝑥))) | |
| 20 | 14, 16, 17, 18, 19 | syl22anc 839 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → ((𝐺 ∘f · 𝐻)‘𝑥) = ((𝐺‘𝑥) · (𝐻‘𝑥))) |
| 21 | 12, 20 | sylan2 594 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐼 ∖ (𝐺 supp 𝑌))) → ((𝐺 ∘f · 𝐻)‘𝑥) = ((𝐺‘𝑥) · (𝐻‘𝑥))) |
| 22 | ssidd 3945 | . . . . . . 7 ⊢ (𝜑 → (𝐺 supp 𝑌) ⊆ (𝐺 supp 𝑌)) | |
| 23 | lcomfsupp.y | . . . . . . . . 9 ⊢ 𝑌 = (0g‘𝐹) | |
| 24 | 23 | fvexi 6854 | . . . . . . . 8 ⊢ 𝑌 ∈ V |
| 25 | 24 | a1i 11 | . . . . . . 7 ⊢ (𝜑 → 𝑌 ∈ V) |
| 26 | 8, 22, 10, 25 | suppssr 8145 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐼 ∖ (𝐺 supp 𝑌))) → (𝐺‘𝑥) = 𝑌) |
| 27 | 26 | oveq1d 7382 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐼 ∖ (𝐺 supp 𝑌))) → ((𝐺‘𝑥) · (𝐻‘𝑥)) = (𝑌 · (𝐻‘𝑥))) |
| 28 | 9 | ffvelcdmda 7036 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (𝐻‘𝑥) ∈ 𝐵) |
| 29 | lcomfsupp.z | . . . . . . . 8 ⊢ 0 = (0g‘𝑊) | |
| 30 | 6, 3, 5, 23, 29 | lmod0vs 20890 | . . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ (𝐻‘𝑥) ∈ 𝐵) → (𝑌 · (𝐻‘𝑥)) = 0 ) |
| 31 | 7, 28, 30 | syl2an2r 686 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐼) → (𝑌 · (𝐻‘𝑥)) = 0 ) |
| 32 | 12, 31 | sylan2 594 | . . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐼 ∖ (𝐺 supp 𝑌))) → (𝑌 · (𝐻‘𝑥)) = 0 ) |
| 33 | 21, 27, 32 | 3eqtrd 2775 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐼 ∖ (𝐺 supp 𝑌))) → ((𝐺 ∘f · 𝐻)‘𝑥) = 0 ) |
| 34 | 11, 33 | suppss 8144 | . . 3 ⊢ (𝜑 → ((𝐺 ∘f · 𝐻) supp 0 ) ⊆ (𝐺 supp 𝑌)) |
| 35 | 2, 34 | ssfid 9179 | . 2 ⊢ (𝜑 → ((𝐺 ∘f · 𝐻) supp 0 ) ∈ Fin) |
| 36 | 13, 15, 10, 10 | offun 7645 | . . 3 ⊢ (𝜑 → Fun (𝐺 ∘f · 𝐻)) |
| 37 | ovexd 7402 | . . 3 ⊢ (𝜑 → (𝐺 ∘f · 𝐻) ∈ V) | |
| 38 | 29 | fvexi 6854 | . . . 4 ⊢ 0 ∈ V |
| 39 | 38 | a1i 11 | . . 3 ⊢ (𝜑 → 0 ∈ V) |
| 40 | funisfsupp 9280 | . . 3 ⊢ ((Fun (𝐺 ∘f · 𝐻) ∧ (𝐺 ∘f · 𝐻) ∈ V ∧ 0 ∈ V) → ((𝐺 ∘f · 𝐻) finSupp 0 ↔ ((𝐺 ∘f · 𝐻) supp 0 ) ∈ Fin)) | |
| 41 | 36, 37, 39, 40 | syl3anc 1374 | . 2 ⊢ (𝜑 → ((𝐺 ∘f · 𝐻) finSupp 0 ↔ ((𝐺 ∘f · 𝐻) supp 0 ) ∈ Fin)) |
| 42 | 35, 41 | mpbird 257 | 1 ⊢ (𝜑 → (𝐺 ∘f · 𝐻) finSupp 0 ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 Vcvv 3429 ∖ cdif 3886 class class class wbr 5085 Fun wfun 6492 Fn wfn 6493 ⟶wf 6494 ‘cfv 6498 (class class class)co 7367 ∘f cof 7629 supp csupp 8110 Fincfn 8893 finSupp cfsupp 9274 Basecbs 17179 Scalarcsca 17223 ·𝑠 cvsca 17224 0gc0g 17402 LModclmod 20855 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pr 5375 ax-un 7689 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-of 7631 df-om 7818 df-supp 8111 df-1o 8405 df-en 8894 df-fin 8897 df-fsupp 9275 df-0g 17404 df-mgm 18608 df-sgrp 18687 df-mnd 18703 df-grp 18912 df-ring 20216 df-lmod 20857 |
| This theorem is referenced by: islindf4 21818 fedgmullem2 33774 |
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