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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 4660 | . . 3 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → ⟨𝐴, 𝐵⟩ ∈ (𝐶 × 𝐷)) | |
2 | fvres 5541 | . . 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 5880 | . 2 ⊢ (𝐴(𝐹 ↾ (𝐶 × 𝐷))𝐵) = ((𝐹 ↾ (𝐶 × 𝐷))‘⟨𝐴, 𝐵⟩) | |
5 | df-ov 5880 | . 2 ⊢ (𝐴𝐹𝐵) = (𝐹‘⟨𝐴, 𝐵⟩) | |
6 | 3, 4, 5 | 3eqtr4g 2235 | 1 ⊢ ((𝐴 ∈ 𝐶 ∧ 𝐵 ∈ 𝐷) → (𝐴(𝐹 ↾ (𝐶 × 𝐷))𝐵) = (𝐴𝐹𝐵)) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 104 = wceq 1353 ∈ wcel 2148 ⟨cop 3597 × cxp 4626 ↾ cres 4630 ‘cfv 5218 (class class class)co 5877 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-14 2151 ax-ext 2159 ax-sep 4123 ax-pow 4176 ax-pr 4211 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1461 df-sb 1763 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ral 2460 df-rex 2461 df-v 2741 df-un 3135 df-in 3137 df-ss 3144 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-br 4006 df-opab 4067 df-xp 4634 df-res 4640 df-iota 5180 df-fv 5226 df-ov 5880 |
This theorem is referenced by: ovresd 6017 oprssov 6018 ofmresval 6096 elq 9624 mgmsscl 12785 grpissubg 13059 xmetres2 13964 blres 14019 xmetresbl 14025 mscl 14050 xmscl 14051 xmsge0 14052 xmseq0 14053 divcnap 14140 cncfmet 14164 |
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