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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 33476 | . . 3 ⊢ ((𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Scalar‘ndx), (𝐹 ↾s 𝐴)〉))) |
| 5 | iftrue 4485 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Scalar‘ndx), (𝐹 ↾s 𝐴)〉)) = 𝑊) | |
| 6 | 4, 5 | sylan9eqr 2818 | . 2 ⊢ ((𝐵 ⊆ 𝐴 ∧ (𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌)) → 𝑅 = 𝑊) |
| 7 | 6 | 3impb 1126 | 1 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = 𝑊) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 ∧ w3a 1097 = wceq 1559 ∈ wcel 2141 ⊆ wss 3904 ifcif 4479 〈cop 4587 ‘cfv 6517 (class class class)co 7392 sSet csts 17182 ndxcnx 17212 Basecbs 17228 ↾s cress 17249 Scalarcsca 17272 ↾v cresv 33473 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5245 ax-nul 5255 ax-pr 5389 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-sbc 3745 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-opab 5162 df-id 5540 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-iota 6473 df-fun 6519 df-fv 6525 df-ov 7395 df-oprab 7396 df-mpo 7397 df-resv 33474 |
| This theorem is referenced by: resvsca 33479 resvlem 33480 |
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