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| Mirrors > Home > MPE Home > Th. List > kqf | Structured version Visualization version GIF version | ||
| Description: The Kolmogorov quotient is a topology on the quotient set. (Contributed by Mario Carneiro, 25-Aug-2015.) |
| Ref | Expression |
|---|---|
| kqf | ⊢ KQ:Top⟶Kol2 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ovex 7393 | . . 3 ⊢ (𝑗 qTop (𝑥 ∈ ∪ 𝑗 ↦ {𝑦 ∈ 𝑗 ∣ 𝑥 ∈ 𝑦})) ∈ V | |
| 2 | df-kq 23642 | . . 3 ⊢ KQ = (𝑗 ∈ Top ↦ (𝑗 qTop (𝑥 ∈ ∪ 𝑗 ↦ {𝑦 ∈ 𝑗 ∣ 𝑥 ∈ 𝑦}))) | |
| 3 | 1, 2 | fnmpti 6636 | . 2 ⊢ KQ Fn Top |
| 4 | kqt0 23694 | . . . 4 ⊢ (𝑥 ∈ Top ↔ (KQ‘𝑥) ∈ Kol2) | |
| 5 | 4 | biimpi 216 | . . 3 ⊢ (𝑥 ∈ Top → (KQ‘𝑥) ∈ Kol2) |
| 6 | 5 | rgen 3054 | . 2 ⊢ ∀𝑥 ∈ Top (KQ‘𝑥) ∈ Kol2 |
| 7 | ffnfv 7066 | . 2 ⊢ (KQ:Top⟶Kol2 ↔ (KQ Fn Top ∧ ∀𝑥 ∈ Top (KQ‘𝑥) ∈ Kol2)) | |
| 8 | 3, 6, 7 | mpbir2an 712 | 1 ⊢ KQ:Top⟶Kol2 |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 ∀wral 3052 {crab 3400 ∪ cuni 4864 ↦ cmpt 5180 Fn wfn 6488 ⟶wf 6489 ‘cfv 6493 (class class class)co 7360 qTop cqtop 17428 Topctop 22841 Kol2ct0 23254 KQckq 23641 |
| 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 2709 ax-rep 5225 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3062 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5520 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-ov 7363 df-oprab 7364 df-mpo 7365 df-qtop 17432 df-top 22842 df-topon 22859 df-t0 23261 df-kq 23642 |
| This theorem is referenced by: (None) |
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