| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > elqtop | Structured version Visualization version GIF version | ||
| Description: Value of the quotient topology function. (Contributed by Mario Carneiro, 23-Mar-2015.) |
| Ref | Expression |
|---|---|
| qtopval.1 | ⊢ 𝑋 = ∪ 𝐽 |
| Ref | Expression |
|---|---|
| elqtop | ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → (𝐴 ∈ (𝐽 qTop 𝐹) ↔ (𝐴 ⊆ 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | qtopval.1 | . . . 4 ⊢ 𝑋 = ∪ 𝐽 | |
| 2 | 1 | qtopval2 23758 | . . 3 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → (𝐽 qTop 𝐹) = {𝑠 ∈ 𝒫 𝑌 ∣ (◡𝐹 “ 𝑠) ∈ 𝐽}) |
| 3 | 2 | eleq2d 2850 | . 2 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → (𝐴 ∈ (𝐽 qTop 𝐹) ↔ 𝐴 ∈ {𝑠 ∈ 𝒫 𝑌 ∣ (◡𝐹 “ 𝑠) ∈ 𝐽})) |
| 4 | imaeq2 6047 | . . . . 5 ⊢ (𝑠 = 𝐴 → (◡𝐹 “ 𝑠) = (◡𝐹 “ 𝐴)) | |
| 5 | 4 | eleq1d 2849 | . . . 4 ⊢ (𝑠 = 𝐴 → ((◡𝐹 “ 𝑠) ∈ 𝐽 ↔ (◡𝐹 “ 𝐴) ∈ 𝐽)) |
| 6 | 5 | elrab 3652 | . . 3 ⊢ (𝐴 ∈ {𝑠 ∈ 𝒫 𝑌 ∣ (◡𝐹 “ 𝑠) ∈ 𝐽} ↔ (𝐴 ∈ 𝒫 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽)) |
| 7 | uniexg 7725 | . . . . . . . . 9 ⊢ (𝐽 ∈ 𝑉 → ∪ 𝐽 ∈ V) | |
| 8 | 1, 7 | eqeltrid 2868 | . . . . . . . 8 ⊢ (𝐽 ∈ 𝑉 → 𝑋 ∈ V) |
| 9 | 8 | 3ad2ant1 1147 | . . . . . . 7 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝑋 ∈ V) |
| 10 | simp3 1152 | . . . . . . 7 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝑍 ⊆ 𝑋) | |
| 11 | 9, 10 | ssexd 5282 | . . . . . 6 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝑍 ∈ V) |
| 12 | simp2 1151 | . . . . . 6 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝐹:𝑍–onto→𝑌) | |
| 13 | focdmex 7939 | . . . . . 6 ⊢ (𝑍 ∈ V → (𝐹:𝑍–onto→𝑌 → 𝑌 ∈ V)) | |
| 14 | 11, 12, 13 | sylc 65 | . . . . 5 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝑌 ∈ V) |
| 15 | elpw2g 5291 | . . . . 5 ⊢ (𝑌 ∈ V → (𝐴 ∈ 𝒫 𝑌 ↔ 𝐴 ⊆ 𝑌)) | |
| 16 | 14, 15 | syl 17 | . . . 4 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → (𝐴 ∈ 𝒫 𝑌 ↔ 𝐴 ⊆ 𝑌)) |
| 17 | 16 | anbi1d 640 | . . 3 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → ((𝐴 ∈ 𝒫 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽) ↔ (𝐴 ⊆ 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽))) |
| 18 | 6, 17 | bitrid 285 | . 2 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → (𝐴 ∈ {𝑠 ∈ 𝒫 𝑌 ∣ (◡𝐹 “ 𝑠) ∈ 𝐽} ↔ (𝐴 ⊆ 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽))) |
| 19 | 3, 18 | bitrd 281 | 1 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → (𝐴 ∈ (𝐽 qTop 𝐹) ↔ (𝐴 ⊆ 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 ∧ w3a 1099 = wceq 1562 ∈ wcel 2144 {crab 3416 Vcvv 3456 ⊆ wss 3906 𝒫 cpw 4557 ∪ cuni 4867 ◡ccnv 5648 “ cima 5652 –onto→wfo 6521 (class class class)co 7398 qTop cqtop 17535 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2214 ax-ext 2736 ax-rep 5229 ax-sep 5248 ax-nul 5258 ax-pow 5324 ax-pr 5392 ax-un 7720 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-nf 1806 df-sb 2093 df-mo 2568 df-eu 2598 df-clab 2743 df-cleq 2756 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3079 df-rex 3089 df-reu 3370 df-rab 3417 df-v 3458 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-id 5544 df-xp 5655 df-rel 5656 df-cnv 5657 df-co 5658 df-dm 5659 df-rn 5660 df-res 5661 df-ima 5662 df-iota 6479 df-fun 6525 df-fn 6526 df-f 6527 df-f1 6528 df-fo 6529 df-f1o 6530 df-fv 6531 df-ov 7401 df-oprab 7402 df-mpo 7403 df-qtop 17539 |
| This theorem is referenced by: qtoptop2 23761 elqtop2 23763 elqtop3 23765 |
| Copyright terms: Public domain | W3C validator |