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| Mirrors > Home > MPE Home > Th. List > sspims | Structured version Visualization version GIF version | ||
| Description: The induced metric on a subspace is a restriction of the induced metric on the parent space. (Contributed by NM, 1-Feb-2008.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| sspims.y | ⊢ 𝑌 = (BaseSet‘𝑊) |
| sspims.d | ⊢ 𝐷 = (IndMet‘𝑈) |
| sspims.c | ⊢ 𝐶 = (IndMet‘𝑊) |
| sspims.h | ⊢ 𝐻 = (SubSp‘𝑈) |
| Ref | Expression |
|---|---|
| sspims | ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → 𝐶 = (𝐷 ↾ (𝑌 × 𝑌))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sspims.y | . 2 ⊢ 𝑌 = (BaseSet‘𝑊) | |
| 2 | sspims.h | . 2 ⊢ 𝐻 = (SubSp‘𝑈) | |
| 3 | sspims.d | . . 3 ⊢ 𝐷 = (IndMet‘𝑈) | |
| 4 | sspims.c | . . 3 ⊢ 𝐶 = (IndMet‘𝑊) | |
| 5 | 1, 3, 4, 2 | sspimsval 30818 | . 2 ⊢ (((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) ∧ (𝑥 ∈ 𝑌 ∧ 𝑦 ∈ 𝑌)) → (𝑥𝐶𝑦) = (𝑥𝐷𝑦)) |
| 6 | 1, 4 | imsdf 30769 | . 2 ⊢ (𝑊 ∈ NrmCVec → 𝐶:(𝑌 × 𝑌)⟶ℝ) |
| 7 | eqid 2737 | . . 3 ⊢ (BaseSet‘𝑈) = (BaseSet‘𝑈) | |
| 8 | 7, 3 | imsdf 30769 | . 2 ⊢ (𝑈 ∈ NrmCVec → 𝐷:((BaseSet‘𝑈) × (BaseSet‘𝑈))⟶ℝ) |
| 9 | 1, 2, 5, 6, 8 | sspmlem 30812 | 1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → 𝐶 = (𝐷 ↾ (𝑌 × 𝑌))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 × cxp 5623 ↾ cres 5627 ‘cfv 6493 ℝcr 11030 NrmCVeccnv 30664 BaseSetcba 30666 IndMetcims 30671 SubSpcss 30801 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5225 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7683 ax-resscn 11088 ax-1cn 11089 ax-icn 11090 ax-addcl 11091 ax-addrcl 11092 ax-mulcl 11093 ax-mulrcl 11094 ax-mulcom 11095 ax-addass 11096 ax-mulass 11097 ax-distr 11098 ax-i2m1 11099 ax-1ne0 11100 ax-1rid 11101 ax-rnegex 11102 ax-rrecex 11103 ax-cnre 11104 ax-pre-lttri 11105 ax-pre-lttrn 11106 ax-pre-ltadd 11107 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5520 df-po 5533 df-so 5534 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-1st 7936 df-2nd 7937 df-er 8638 df-en 8889 df-dom 8890 df-sdom 8891 df-pnf 11173 df-mnf 11174 df-ltxr 11176 df-sub 11371 df-neg 11372 df-grpo 30573 df-gid 30574 df-ginv 30575 df-gdiv 30576 df-ablo 30625 df-vc 30639 df-nv 30672 df-va 30675 df-ba 30676 df-sm 30677 df-0v 30678 df-vs 30679 df-nmcv 30680 df-ims 30681 df-ssp 30802 |
| This theorem is referenced by: bnsscmcl 30948 minvecolem4a 30957 |
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