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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 7391 | . . 3 ⊢ (𝑗 qTop (𝑥 ∈ ∪ 𝑗 ↦ {𝑦 ∈ 𝑗 ∣ 𝑥 ∈ 𝑦})) ∈ V | |
| 2 | df-kq 23668 | . . 3 ⊢ KQ = (𝑗 ∈ Top ↦ (𝑗 qTop (𝑥 ∈ ∪ 𝑗 ↦ {𝑦 ∈ 𝑗 ∣ 𝑥 ∈ 𝑦}))) | |
| 3 | 1, 2 | fnmpti 6633 | . 2 ⊢ KQ Fn Top |
| 4 | kqt0 23720 | . . . 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 7063 | . 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 3390 ∪ cuni 4851 ↦ cmpt 5167 Fn wfn 6485 ⟶wf 6486 ‘cfv 6490 (class class class)co 7358 qTop cqtop 17456 Topctop 22867 Kol2ct0 23280 KQckq 23667 |
| 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 5212 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5368 ax-un 7680 |
| 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 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-ov 7361 df-oprab 7362 df-mpo 7363 df-qtop 17460 df-top 22868 df-topon 22885 df-t0 23287 df-kq 23668 |
| This theorem is referenced by: (None) |
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