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Mirrors > Home > MPE Home > Th. List > ovid | Structured version Visualization version GIF version |
Description: The value of an operation class abstraction. (Contributed by NM, 16-May-1995.) (Revised by David Abernethy, 19-Jun-2012.) |
Ref | Expression |
---|---|
ovid.1 | ⊢ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) → ∃!𝑧𝜑) |
ovid.2 | ⊢ 𝐹 = {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) ∧ 𝜑)} |
Ref | Expression |
---|---|
ovid | ⊢ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) → ((𝑥𝐹𝑦) = 𝑧 ↔ 𝜑)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-ov 7138 | . . 3 ⊢ (𝑥𝐹𝑦) = (𝐹‘〈𝑥, 𝑦〉) | |
2 | 1 | eqeq1i 2803 | . 2 ⊢ ((𝑥𝐹𝑦) = 𝑧 ↔ (𝐹‘〈𝑥, 𝑦〉) = 𝑧) |
3 | ovid.1 | . . . . . 6 ⊢ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) → ∃!𝑧𝜑) | |
4 | 3 | fnoprab 7256 | . . . . 5 ⊢ {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) ∧ 𝜑)} Fn {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆)} |
5 | ovid.2 | . . . . . 6 ⊢ 𝐹 = {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) ∧ 𝜑)} | |
6 | 5 | fneq1i 6420 | . . . . 5 ⊢ (𝐹 Fn {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆)} ↔ {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) ∧ 𝜑)} Fn {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆)}) |
7 | 4, 6 | mpbir 234 | . . . 4 ⊢ 𝐹 Fn {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆)} |
8 | opabidw 5377 | . . . . 5 ⊢ (〈𝑥, 𝑦〉 ∈ {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆)} ↔ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆)) | |
9 | 8 | biimpri 231 | . . . 4 ⊢ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) → 〈𝑥, 𝑦〉 ∈ {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆)}) |
10 | fnopfvb 6694 | . . . 4 ⊢ ((𝐹 Fn {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆)} ∧ 〈𝑥, 𝑦〉 ∈ {〈𝑥, 𝑦〉 ∣ (𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆)}) → ((𝐹‘〈𝑥, 𝑦〉) = 𝑧 ↔ 〈〈𝑥, 𝑦〉, 𝑧〉 ∈ 𝐹)) | |
11 | 7, 9, 10 | sylancr 590 | . . 3 ⊢ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) → ((𝐹‘〈𝑥, 𝑦〉) = 𝑧 ↔ 〈〈𝑥, 𝑦〉, 𝑧〉 ∈ 𝐹)) |
12 | 5 | eleq2i 2881 | . . . . 5 ⊢ (〈〈𝑥, 𝑦〉, 𝑧〉 ∈ 𝐹 ↔ 〈〈𝑥, 𝑦〉, 𝑧〉 ∈ {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) ∧ 𝜑)}) |
13 | oprabidw 7166 | . . . . 5 ⊢ (〈〈𝑥, 𝑦〉, 𝑧〉 ∈ {〈〈𝑥, 𝑦〉, 𝑧〉 ∣ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) ∧ 𝜑)} ↔ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) ∧ 𝜑)) | |
14 | 12, 13 | bitri 278 | . . . 4 ⊢ (〈〈𝑥, 𝑦〉, 𝑧〉 ∈ 𝐹 ↔ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) ∧ 𝜑)) |
15 | 14 | baib 539 | . . 3 ⊢ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) → (〈〈𝑥, 𝑦〉, 𝑧〉 ∈ 𝐹 ↔ 𝜑)) |
16 | 11, 15 | bitrd 282 | . 2 ⊢ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) → ((𝐹‘〈𝑥, 𝑦〉) = 𝑧 ↔ 𝜑)) |
17 | 2, 16 | syl5bb 286 | 1 ⊢ ((𝑥 ∈ 𝑅 ∧ 𝑦 ∈ 𝑆) → ((𝑥𝐹𝑦) = 𝑧 ↔ 𝜑)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 ∃!weu 2628 〈cop 4531 {copab 5092 Fn wfn 6319 ‘cfv 6324 (class class class)co 7135 {coprab 7136 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pr 5295 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ral 3111 df-rex 3112 df-v 3443 df-sbc 3721 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-opab 5093 df-id 5425 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-iota 6283 df-fun 6326 df-fn 6327 df-fv 6332 df-ov 7138 df-oprab 7139 |
This theorem is referenced by: (None) |
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