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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 33627 | . . 3 ⊢ ((𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Scalar‘ndx), (𝐹 ↾s 𝐴)〉))) |
| 5 | iftrue 4494 | . . 3 ⊢ (𝐵 ⊆ 𝐴 → if(𝐵 ⊆ 𝐴, 𝑊, (𝑊 sSet 〈(Scalar‘ndx), (𝐹 ↾s 𝐴)〉)) = 𝑊) | |
| 6 | 4, 5 | sylan9eqr 2820 | . 2 ⊢ ((𝐵 ⊆ 𝐴 ∧ (𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌)) → 𝑅 = 𝑊) |
| 7 | 6 | 3impb 1132 | 1 ⊢ ((𝐵 ⊆ 𝐴 ∧ 𝑊 ∈ 𝑋 ∧ 𝐴 ∈ 𝑌) → 𝑅 = 𝑊) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∧ w3a 1103 = wceq 1570 ∈ wcel 2143 ⊆ wss 3906 ifcif 4488 〈cop 4596 ‘cfv 6538 (class class class)co 7412 sSet csts 17224 ndxcnx 17254 Basecbs 17270 ↾s cress 17291 Scalarcsca 17314 ↾v cresv 33624 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5258 ax-nul 5270 ax-pr 5406 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-sbc 3746 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-br 5111 df-opab 5175 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-iota 6494 df-fun 6540 df-fv 6546 df-ov 7415 df-oprab 7416 df-mpo 7417 df-resv 33625 |
| This theorem is referenced by: resvsca 33630 resvlem 33631 |
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