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| 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 24015 | . . 3 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → (𝐽 qTop 𝐹) = {𝑠 ∈ 𝒫 𝑌 ∣ (◡𝐹 “ 𝑠) ∈ 𝐽}) |
| 3 | 2 | eleq2d 2846 | . 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 2845 | . . . 4 ⊢ (𝑠 = 𝐴 → ((◡𝐹 “ 𝑠) ∈ 𝐽 ↔ (◡𝐹 “ 𝐴) ∈ 𝐽)) |
| 6 | 5 | elrab 3644 | . . 3 ⊢ (𝐴 ∈ {𝑠 ∈ 𝒫 𝑌 ∣ (◡𝐹 “ 𝑠) ∈ 𝐽} ↔ (𝐴 ∈ 𝒫 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽)) |
| 7 | uniexg 7757 | . . . . . . . . 9 ⊢ (𝐽 ∈ 𝑉 → ∪ 𝐽 ∈ V) | |
| 8 | 1, 7 | eqeltrid 2864 | . . . . . . . 8 ⊢ (𝐽 ∈ 𝑉 → 𝑋 ∈ V) |
| 9 | 8 | 3ad2ant1 1151 | . . . . . . 7 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝑋 ∈ V) |
| 10 | simp3 1156 | . . . . . . 7 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝑍 ⊆ 𝑋) | |
| 11 | 9, 10 | ssexd 5285 | . . . . . 6 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝑍 ∈ V) |
| 12 | simp2 1155 | . . . . . 6 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝐹:𝑍–onto→𝑌) | |
| 13 | focdmex 7968 | . . . . . 6 ⊢ (𝑍 ∈ V → (𝐹:𝑍–onto→𝑌 → 𝑌 ∈ V)) | |
| 14 | 11, 12, 13 | sylc 66 | . . . . 5 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → 𝑌 ∈ V) |
| 15 | elpw2g 5294 | . . . . 5 ⊢ (𝑌 ∈ V → (𝐴 ∈ 𝒫 𝑌 ↔ 𝐴 ⊆ 𝑌)) | |
| 16 | 14, 15 | syl 18 | . . . 4 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → (𝐴 ∈ 𝒫 𝑌 ↔ 𝐴 ⊆ 𝑌)) |
| 17 | 16 | anbi1d 643 | . . 3 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → ((𝐴 ∈ 𝒫 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽) ↔ (𝐴 ⊆ 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽))) |
| 18 | 6, 17 | bitrid 286 | . 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 282 | 1 ⊢ ((𝐽 ∈ 𝑉 ∧ 𝐹:𝑍–onto→𝑌 ∧ 𝑍 ⊆ 𝑋) → (𝐴 ∈ (𝐽 qTop 𝐹) ↔ (𝐴 ⊆ 𝑌 ∧ (◡𝐹 “ 𝐴) ∈ 𝐽))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1569 ∈ wcel 2144 {crab 3412 Vcvv 3450 ⊆ wss 3895 𝒫 cpw 4556 ∪ cuni 4866 ◡ccnv 5649 “ cima 5653 –onto→wfo 6536 (class class class)co 7420 qTop cqtop 17675 |
| 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 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7751 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-oprab 7424 df-mpo 7425 df-qtop 17679 |
| This theorem is used by: qtoptop2 24018 elqtop2 24020 elqtop3 24022 |
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