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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 33419 | . . 3 ⊢ ((𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Scalar‘ndx), (𝐹 ↾s 𝐴)〉))) |
| 5 | iftrue 4467 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Scalar‘ndx), (𝐹 ↾s 𝐴)〉)) = 𝑊) | |
| 6 | 4, 5 | sylan9eqr 2797 | . 2 ⊢ ((𝐵 ⊆ 𝐴 ∧ (𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌)) → 𝑅 = 𝑊) |
| 7 | 6 | 3impb 1120 | 1 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = 𝑊) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1092 = wceq 1547 ∈ wcel 2119 ⊆ wss 3890 ifcif 4461 〈cop 4568 ‘cfv 6492 (class class class)co 7363 sSet csts 17131 ndxcnx 17161 Basecbs 17177 ↾s cress 17198 Scalarcsca 17221 ↾v cresv 33416 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-nul 5235 ax-pr 5369 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-sbc 3731 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-br 5080 df-opab 5142 df-id 5520 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-iota 6448 df-fun 6494 df-fv 6500 df-ov 7366 df-oprab 7367 df-mpo 7368 df-resv 33417 |
| This theorem is referenced by: resvsca 33422 resvlem 33423 |
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