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Mirrors > Home > MPE Home > Th. List > opabbrex | Structured version Visualization version GIF version |
Description: A collection of ordered pairs with an extension of a binary relation is a set. (Contributed by Alexander van der Vekens, 1-Nov-2017.) (Revised by BJ/AV, 20-Jun-2019.) (Proof shortened by OpenAI, 25-Mar-2020.) |
Ref | Expression |
---|---|
opabbrex | ⊢ ((∀𝑥∀𝑦(𝑥𝑅𝑦 → 𝜑) ∧ {〈𝑥, 𝑦〉 ∣ 𝜑} ∈ 𝑉) → {〈𝑥, 𝑦〉 ∣ (𝑥𝑅𝑦 ∧ 𝜓)} ∈ V) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simpr 476 | . 2 ⊢ ((∀𝑥∀𝑦(𝑥𝑅𝑦 → 𝜑) ∧ {〈𝑥, 𝑦〉 ∣ 𝜑} ∈ 𝑉) → {〈𝑥, 𝑦〉 ∣ 𝜑} ∈ 𝑉) | |
2 | pm3.41 580 | . . . . 5 ⊢ ((𝑥𝑅𝑦 → 𝜑) → ((𝑥𝑅𝑦 ∧ 𝜓) → 𝜑)) | |
3 | 2 | 2alimi 1731 | . . . 4 ⊢ (∀𝑥∀𝑦(𝑥𝑅𝑦 → 𝜑) → ∀𝑥∀𝑦((𝑥𝑅𝑦 ∧ 𝜓) → 𝜑)) |
4 | 3 | adantr 480 | . . 3 ⊢ ((∀𝑥∀𝑦(𝑥𝑅𝑦 → 𝜑) ∧ {〈𝑥, 𝑦〉 ∣ 𝜑} ∈ 𝑉) → ∀𝑥∀𝑦((𝑥𝑅𝑦 ∧ 𝜓) → 𝜑)) |
5 | ssopab2 4926 | . . 3 ⊢ (∀𝑥∀𝑦((𝑥𝑅𝑦 ∧ 𝜓) → 𝜑) → {〈𝑥, 𝑦〉 ∣ (𝑥𝑅𝑦 ∧ 𝜓)} ⊆ {〈𝑥, 𝑦〉 ∣ 𝜑}) | |
6 | 4, 5 | syl 17 | . 2 ⊢ ((∀𝑥∀𝑦(𝑥𝑅𝑦 → 𝜑) ∧ {〈𝑥, 𝑦〉 ∣ 𝜑} ∈ 𝑉) → {〈𝑥, 𝑦〉 ∣ (𝑥𝑅𝑦 ∧ 𝜓)} ⊆ {〈𝑥, 𝑦〉 ∣ 𝜑}) |
7 | 1, 6 | ssexd 4733 | 1 ⊢ ((∀𝑥∀𝑦(𝑥𝑅𝑦 → 𝜑) ∧ {〈𝑥, 𝑦〉 ∣ 𝜑} ∈ 𝑉) → {〈𝑥, 𝑦〉 ∣ (𝑥𝑅𝑦 ∧ 𝜓)} ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 ∀wal 1473 ∈ wcel 1977 Vcvv 3173 ⊆ wss 3540 class class class wbr 4583 {copab 4642 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-v 3175 df-in 3547 df-ss 3554 df-opab 4644 |
This theorem is referenced by: fvmptopab1 6594 sprmpt2d 7237 wlkres 26050 opabresex0d 40330 opabresex2d 40334 wlkRes 40858 |
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