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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 22986 | . . . . . . 7 ⊢ (𝑅 ∈ (TopOn‘𝑋) → 𝑋 ∈ 𝑅) | |
| 6 | 3, 5 | syl 17 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑋 ∈ 𝑅) |
| 7 | 6, 4 | ssexd 5280 | . . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝐴) → 𝑆 ∈ V) |
| 8 | 7 | ralrimiva 3154 | . . . 4 ⊢ (𝜑 → ∀𝑘 ∈ 𝐴 𝑆 ∈ V) |
| 9 | iunexg 7944 | . . . 4 ⊢ ((𝐴 ∈ 𝑉 ∧ ∀𝑘 ∈ 𝐴 𝑆 ∈ V) → ∪ 𝑘 ∈ 𝐴 𝑆 ∈ V) | |
| 10 | 2, 8, 9 | syl2anc 593 | . . 3 ⊢ (𝜑 → ∪ 𝑘 ∈ 𝐴 𝑆 ∈ V) |
| 11 | axac3 10421 | . . . 4 ⊢ CHOICE | |
| 12 | acacni 10097 | . . . 4 ⊢ ((CHOICE ∧ 𝐴 ∈ 𝑉) → AC 𝐴 = V) | |
| 13 | 11, 2, 12 | sylancr 596 | . . 3 ⊢ (𝜑 → AC 𝐴 = V) |
| 14 | 10, 13 | eleqtrrd 2865 | . 2 ⊢ (𝜑 → ∪ 𝑘 ∈ 𝐴 𝑆 ∈ AC 𝐴) |
| 15 | 1, 2, 3, 4, 14 | ptclsg 23675 | 1 ⊢ (𝜑 → ((cls‘𝐽)‘X𝑘 ∈ 𝐴 𝑆) = X𝑘 ∈ 𝐴 ((cls‘𝑅)‘𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 = wceq 1560 ∈ wcel 2142 ∀wral 3076 Vcvv 3454 ⊆ wss 3904 ∪ ciun 4949 ↦ cmpt 5181 ‘cfv 6521 Xcixp 8879 AC wacn 9896 CHOICEwac 10071 ∏tcpt 17467 TopOnctopon 22970 clsccl 23078 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-ac2 10420 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-int 4906 df-iun 4951 df-iin 4952 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-se 5601 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-lim 6351 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-isom 6530 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-om 7847 df-1st 7970 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-1o 8437 df-2o 8438 df-er 8678 df-map 8810 df-ixp 8880 df-en 8928 df-dom 8929 df-fin 8931 df-fi 9357 df-card 9897 df-acn 9900 df-ac 10072 df-topgen 17472 df-pt 17473 df-top 22954 df-topon 22971 df-bases 23006 df-cld 23079 df-ntr 23080 df-cls 23081 |
| This theorem is referenced by: (None) |
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