| Mathbox for Alexander van der Vekens |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > mptcfsupp | Structured version Visualization version GIF version | ||
| Description: A mapping with value 0 except of one is finitely supported. (Contributed by AV, 9-Jun-2019.) |
| Ref | Expression |
|---|---|
| suppmptcfin.b | ⊢ 𝐵 = (Base‘𝑀) |
| suppmptcfin.r | ⊢ 𝑅 = (Scalar‘𝑀) |
| suppmptcfin.0 | ⊢ 0 = (0g‘𝑅) |
| suppmptcfin.1 | ⊢ 1 = (1r‘𝑅) |
| suppmptcfin.f | ⊢ 𝐹 = (𝑥 ∈ 𝑉 ↦ if(𝑥 = 𝑋, 1 , 0 )) |
| Ref | Expression |
|---|---|
| mptcfsupp | ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → 𝐹 finSupp 0 ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | suppmptcfin.f | . . . 4 ⊢ 𝐹 = (𝑥 ∈ 𝑉 ↦ if(𝑥 = 𝑋, 1 , 0 )) | |
| 2 | 1 | funmpt2 6580 | . . 3 ⊢ Fun 𝐹 |
| 3 | 2 | a1i 11 | . 2 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → Fun 𝐹) |
| 4 | suppmptcfin.b | . . 3 ⊢ 𝐵 = (Base‘𝑀) | |
| 5 | suppmptcfin.r | . . 3 ⊢ 𝑅 = (Scalar‘𝑀) | |
| 6 | suppmptcfin.0 | . . 3 ⊢ 0 = (0g‘𝑅) | |
| 7 | suppmptcfin.1 | . . 3 ⊢ 1 = (1r‘𝑅) | |
| 8 | 4, 5, 6, 7, 1 | suppmptcfin 49582 | . 2 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝐹 supp 0 ) ∈ Fin) |
| 9 | mptexg 7228 | . . . . 5 ⊢ (𝑉 ∈ 𝒫 𝐵 → (𝑥 ∈ 𝑉 ↦ if(𝑥 = 𝑋, 1 , 0 )) ∈ V) | |
| 10 | 1, 9 | eqeltrid 2864 | . . . 4 ⊢ (𝑉 ∈ 𝒫 𝐵 → 𝐹 ∈ V) |
| 11 | 10 | 3ad2ant2 1152 | . . 3 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → 𝐹 ∈ V) |
| 12 | 6 | fvexi 6900 | . . 3 ⊢ 0 ∈ V |
| 13 | isfsupp 9361 | . . 3 ⊢ ((𝐹 ∈ V ∧ 0 ∈ V) → (𝐹 finSupp 0 ↔ (Fun 𝐹 ∧ (𝐹 supp 0 ) ∈ Fin))) | |
| 14 | 11, 12, 13 | sylancl 598 | . 2 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → (𝐹 finSupp 0 ↔ (Fun 𝐹 ∧ (𝐹 supp 0 ) ∈ Fin))) |
| 15 | 3, 8, 14 | mpbir2and 726 | 1 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 𝐵 ∧ 𝑋 ∈ 𝑉) → 𝐹 finSupp 0 ) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1569 ∈ wcel 2144 Vcvv 3450 ifcif 4481 𝒫 cpw 4556 class class class wbr 5102 ↦ cmpt 5185 Fun wfun 6533 ‘cfv 6539 (class class class)co 7421 supp csupp 8180 Fincfn 8977 finSupp cfsupp 9357 Basecbs 17393 Scalarcsca 17437 0gc0g 17616 1rcur 20413 LModclmod 21141 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pr 5390 ax-un 7752 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-ov 7424 df-oprab 7425 df-mpo 7426 df-om 7879 df-supp 8181 df-1o 8480 df-en 8978 df-fin 8981 df-fsupp 9358 |
| This theorem is used by: lcoss 49642 el0ldep 49672 |
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