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Mirrors > Home > MPE Home > Th. List > elmptrab2 | Structured version Visualization version GIF version |
Description: Membership in a one-parameter class of sets, indexed by arbitrary base sets. (Contributed by Stefan O'Rear, 28-Jul-2015.) (Revised by AV, 26-Mar-2021.) |
Ref | Expression |
---|---|
elmptrab2.f | ⊢ 𝐹 = (𝑥 ∈ V ↦ {𝑦 ∈ 𝐵 ∣ 𝜑}) |
elmptrab2.s1 | ⊢ ((𝑥 = 𝑋 ∧ 𝑦 = 𝑌) → (𝜑 ↔ 𝜓)) |
elmptrab2.s2 | ⊢ (𝑥 = 𝑋 → 𝐵 = 𝐶) |
elmptrab2.ex | ⊢ 𝐵 ∈ V |
elmptrab2.rc | ⊢ (𝑌 ∈ 𝐶 → 𝑋 ∈ 𝑊) |
Ref | Expression |
---|---|
elmptrab2 | ⊢ (𝑌 ∈ (𝐹‘𝑋) ↔ (𝑌 ∈ 𝐶 ∧ 𝜓)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elmptrab2.f | . . 3 ⊢ 𝐹 = (𝑥 ∈ V ↦ {𝑦 ∈ 𝐵 ∣ 𝜑}) | |
2 | elmptrab2.s1 | . . 3 ⊢ ((𝑥 = 𝑋 ∧ 𝑦 = 𝑌) → (𝜑 ↔ 𝜓)) | |
3 | elmptrab2.s2 | . . 3 ⊢ (𝑥 = 𝑋 → 𝐵 = 𝐶) | |
4 | elmptrab2.ex | . . . 4 ⊢ 𝐵 ∈ V | |
5 | 4 | a1i 11 | . . 3 ⊢ (𝑥 ∈ V → 𝐵 ∈ V) |
6 | 1, 2, 3, 5 | elmptrab 23331 | . 2 ⊢ (𝑌 ∈ (𝐹‘𝑋) ↔ (𝑋 ∈ V ∧ 𝑌 ∈ 𝐶 ∧ 𝜓)) |
7 | 3simpc 1151 | . . 3 ⊢ ((𝑋 ∈ V ∧ 𝑌 ∈ 𝐶 ∧ 𝜓) → (𝑌 ∈ 𝐶 ∧ 𝜓)) | |
8 | elmptrab2.rc | . . . . . 6 ⊢ (𝑌 ∈ 𝐶 → 𝑋 ∈ 𝑊) | |
9 | 8 | elexd 3495 | . . . . 5 ⊢ (𝑌 ∈ 𝐶 → 𝑋 ∈ V) |
10 | 9 | adantr 482 | . . . 4 ⊢ ((𝑌 ∈ 𝐶 ∧ 𝜓) → 𝑋 ∈ V) |
11 | simpl 484 | . . . 4 ⊢ ((𝑌 ∈ 𝐶 ∧ 𝜓) → 𝑌 ∈ 𝐶) | |
12 | simpr 486 | . . . 4 ⊢ ((𝑌 ∈ 𝐶 ∧ 𝜓) → 𝜓) | |
13 | 10, 11, 12 | 3jca 1129 | . . 3 ⊢ ((𝑌 ∈ 𝐶 ∧ 𝜓) → (𝑋 ∈ V ∧ 𝑌 ∈ 𝐶 ∧ 𝜓)) |
14 | 7, 13 | impbii 208 | . 2 ⊢ ((𝑋 ∈ V ∧ 𝑌 ∈ 𝐶 ∧ 𝜓) ↔ (𝑌 ∈ 𝐶 ∧ 𝜓)) |
15 | 6, 14 | bitri 275 | 1 ⊢ (𝑌 ∈ (𝐹‘𝑋) ↔ (𝑌 ∈ 𝐶 ∧ 𝜓)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 {crab 3433 Vcvv 3475 ↦ cmpt 5232 ‘cfv 6544 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-sep 5300 ax-nul 5307 ax-pr 5428 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ral 3063 df-rex 3072 df-rab 3434 df-v 3477 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-nul 4324 df-if 4530 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4910 df-br 5150 df-opab 5212 df-mpt 5233 df-id 5575 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-iota 6496 df-fun 6546 df-fv 6552 |
This theorem is referenced by: isfil 23351 isufil 23407 |
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