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| Mirrors > Home > MPE Home > Th. List > ptcls | Structured version Visualization version GIF version | ||
| Description: The closure of a box in the product topology is the box formed from the closures of the factors. This theorem is an AC equivalent. (Contributed by Mario Carneiro, 2-Sep-2015.) |
| Ref | Expression |
|---|---|
| ptcls.2 | ⊢ 𝐽 = (∏t‘(𝑘 ∈ 𝐴 ↦ 𝑅)) |
| ptcls.a | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| ptcls.j | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑅 ∈ (TopOn‘𝑋)) |
| ptcls.c | ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑆 ⊆ 𝑋) |
| Ref | Expression |
|---|---|
| ptcls | ⊢ (𝜑 → ((cls‘𝐽)‘X𝑘 ∈ 𝐴 𝑆) = X𝑘 ∈ 𝐴 ((cls‘𝑅)‘𝑆)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ptcls.2 | . 2 ⊢ 𝐽 = (∏t‘(𝑘 ∈ 𝐴 ↦ 𝑅)) | |
| 2 | ptcls.a | . 2 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 3 | ptcls.j | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑅 ∈ (TopOn‘𝑋)) | |
| 4 | ptcls.c | . 2 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑆 ⊆ 𝑋) | |
| 5 | toponmax 23256 | . . . . . . 7 ⊢ (𝑅 ∈ (TopOn‘𝑋) → 𝑋 ∈ 𝑅) | |
| 6 | 3, 5 | syl 18 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑋 ∈ 𝑅) |
| 7 | 6, 4 | ssexd 5289 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑆 ∈ V) |
| 8 | 7 | ralrimiva 3157 | . . . 4 ⊢ (𝜑 → ∀𝑘 ∈ 𝐴 𝑆 ∈ V) |
| 9 | iunexg 7982 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ ∀𝑘 ∈ 𝐴 𝑆 ∈ V) → ∪ 𝑘 ∈ 𝐴 𝑆 ∈ V) | |
| 10 | 2, 8, 9 | syl2anc 596 | . . 3 ⊢ (𝜑 → ∪ 𝑘 ∈ 𝐴 𝑆 ∈ V) |
| 11 | axac3 10552 | . . . 4 ⊢ CHOICE | |
| 12 | acacni 10229 | . . . 4 ⊢ ((CHOICE ∧ 𝐴 ∈ 𝑉) → AC 𝐴 = V) | |
| 13 | 11, 2, 12 | sylancr 599 | . . 3 ⊢ (𝜑 → AC 𝐴 = V) |
| 14 | 10, 13 | eleqtrrd 2866 | . 2 ⊢ (𝜑 → ∪ 𝑘 ∈ 𝐴 𝑆 ∈ AC 𝐴) |
| 15 | 1, 2, 3, 4, 14 | ptclsg 23946 | 1 ⊢ (𝜑 → ((cls‘𝐽)‘X𝑘 ∈ 𝐴 𝑆) = X𝑘 ∈ 𝐴 ((cls‘𝑅)‘𝑆)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2146 ∀wral 3079 Vcvv 3453 ⊆ wss 3899 ∪ ciun 4953 ↦ cmpt 5188 ‘cfv 6546 Xcixp 8936 AC wacn 10029 CHOICEwac 10204 ∏tcpt 17621 TopOnctopon 23240 clsccl 23348 |
| 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 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-rep 5234 ax-sep 5251 ax-nul 5262 ax-pow 5330 ax-pr 5394 ax-un 7758 ax-ac2 10551 |
| 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 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rmo 3368 df-reu 3369 df-rab 3416 df-v 3455 df-sbc 3742 df-csb 3851 df-ss 3900 df-pss 4016 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-pw 4561 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-int 4910 df-iun 4955 df-iin 4956 df-br 5106 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5549 df-eprel 5554 df-po 5562 df-so 5563 df-fr 5607 df-se 5608 df-we 5609 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6310 df-ord 6371 df-on 6372 df-lim 6373 df-suc 6374 df-iota 6500 df-fun 6548 df-fn 6549 df-f 6550 df-f1 6551 df-fo 6552 df-f1o 6553 df-fv 6554 df-isom 6555 df-riota 7384 df-ov 7430 df-oprab 7431 df-mpo 7432 df-om 7885 df-1st 8008 df-2nd 8009 df-frecs 8310 df-wrecs 8341 df-recs 8390 df-1o 8487 df-2o 8488 df-er 8728 df-map 8860 df-ixp 8937 df-en 8985 df-dom 8986 df-fin 8988 df-fi 9413 df-card 10030 df-acn 10033 df-ac 10205 df-topgen 17626 df-pt 17627 df-top 23224 df-topon 23241 df-bases 23276 df-cld 23349 df-ntr 23350 df-cls 23351 |
| This theorem is used by: (None) |
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