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| Mirrors > Home > MPE Home > Th. List > Mathboxes > resvid2 | Structured version Visualization version GIF version | ||
| Description: General behavior of trivial restriction. (Contributed by Thierry Arnoux, 6-Sep-2018.) |
| Ref | Expression |
|---|---|
| resvsca.r | ⊢ 𝑅 = (𝑊 ↾v 𝐴) |
| resvsca.f | ⊢ 𝐹 = (Scalar‘𝑊) |
| resvsca.b | ⊢ 𝐵 = (Base‘𝐹) |
| Ref | Expression |
|---|---|
| resvid2 | ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = 𝑊) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | resvsca.r | . . . 4 ⊢ 𝑅 = (𝑊 ↾v 𝐴) | |
| 2 | resvsca.f | . . . 4 ⊢ 𝐹 = (Scalar‘𝑊) | |
| 3 | resvsca.b | . . . 4 ⊢ 𝐵 = (Base‘𝐹) | |
| 4 | 1, 2, 3 | resvval 33564 | . . 3 ⊢ ((𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Scalar‘ndx), (𝐹 ↾s 𝐴)〉))) |
| 5 | iftrue 4489 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Scalar‘ndx), (𝐹 ↾s 𝐴)〉)) = 𝑊) | |
| 6 | 4, 5 | sylan9eqr 2822 | . 2 ⊢ ((𝐵 ⊆ 𝐴 ∧ (𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌)) → 𝑅 = 𝑊) |
| 7 | 6 | 3impb 1130 | 1 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = 𝑊) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∧ w3a 1101 = wceq 1563 ∈ wcel 2145 ⊆ wss 3907 ifcif 4483 〈cop 4591 ‘cfv 6525 (class class class)co 7400 sSet csts 17213 ndxcnx 17243 Basecbs 17259 ↾s cress 17280 Scalarcsca 17303 ↾v cresv 33561 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pr 5395 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-sbc 3748 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-br 5106 df-opab 5168 df-id 5547 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-iota 6481 df-fun 6527 df-fv 6533 df-ov 7403 df-oprab 7404 df-mpo 7405 df-resv 33562 |
| This theorem is referenced by: resvsca 33567 resvlem 33568 |
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