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Mirrors > Home > ILE Home > Th. List > ovres | GIF version |
Description: The value of a restricted operation. (Contributed by FL, 10-Nov-2006.) |
Ref | Expression |
---|---|
ovres | ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴(𝐹 ↾ (𝐶 × 𝐷))𝐵) = (𝐴𝐹𝐵)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opelxpi 4529 | . . 3 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → 〈𝐴, 𝐵〉 ∈ (𝐶 × 𝐷)) | |
2 | fvres 5397 | . . 3 ⊢ (〈𝐴, 𝐵〉 ∈ (𝐶 × 𝐷) → ((𝐹 ↾ (𝐶 × 𝐷))‘〈𝐴, 𝐵〉) = (𝐹‘〈𝐴, 𝐵〉)) | |
3 | 1, 2 | syl 14 | . 2 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → ((𝐹 ↾ (𝐶 × 𝐷))‘〈𝐴, 𝐵〉) = (𝐹‘〈𝐴, 𝐵〉)) |
4 | df-ov 5729 | . 2 ⊢ (𝐴(𝐹 ↾ (𝐶 × 𝐷))𝐵) = ((𝐹 ↾ (𝐶 × 𝐷))‘〈𝐴, 𝐵〉) | |
5 | df-ov 5729 | . 2 ⊢ (𝐴𝐹𝐵) = (𝐹‘〈𝐴, 𝐵〉) | |
6 | 3, 4, 5 | 3eqtr4g 2170 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴(𝐹 ↾ (𝐶 × 𝐷))𝐵) = (𝐴𝐹𝐵)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 = wceq 1312 ∈ wcel 1461 〈cop 3494 × cxp 4495 ↾ cres 4499 ‘cfv 5079 (class class class)co 5726 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 681 ax-5 1404 ax-7 1405 ax-gen 1406 ax-ie1 1450 ax-ie2 1451 ax-8 1463 ax-10 1464 ax-11 1465 ax-i12 1466 ax-bndl 1467 ax-4 1468 ax-14 1473 ax-17 1487 ax-i9 1491 ax-ial 1495 ax-i5r 1496 ax-ext 2095 ax-sep 4004 ax-pow 4056 ax-pr 4089 |
This theorem depends on definitions: df-bi 116 df-3an 945 df-tru 1315 df-nf 1418 df-sb 1717 df-clab 2100 df-cleq 2106 df-clel 2109 df-nfc 2242 df-ral 2393 df-rex 2394 df-v 2657 df-un 3039 df-in 3041 df-ss 3048 df-pw 3476 df-sn 3497 df-pr 3498 df-op 3500 df-uni 3701 df-br 3894 df-opab 3948 df-xp 4503 df-res 4509 df-iota 5044 df-fv 5087 df-ov 5729 |
This theorem is referenced by: ovresd 5863 oprssov 5864 ofmresval 5945 elq 9310 xmetres2 12362 blres 12417 xmetresbl 12423 mscl 12448 xmscl 12449 xmsge0 12450 xmseq0 12451 divcnap 12535 cncfmet 12559 |
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