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| Mirrors > Home > ILE Home > Th. List > mspropd | GIF version | ||
| Description: Property deduction for a metric space. (Contributed by Mario Carneiro, 4-Oct-2015.) |
| Ref | Expression |
|---|---|
| xmspropd.1 | ⊢ (𝜑 → 𝐵 = (Base‘𝐾)) |
| xmspropd.2 | ⊢ (𝜑 → 𝐵 = (Base‘𝐿)) |
| xmspropd.3 | ⊢ (𝜑 → ((dist‘𝐾) ↾ (𝐵 × 𝐵)) = ((dist‘𝐿) ↾ (𝐵 × 𝐵))) |
| xmspropd.4 | ⊢ (𝜑 → (TopOpen‘𝐾) = (TopOpen‘𝐿)) |
| Ref | Expression |
|---|---|
| mspropd | ⊢ (𝜑 → (𝐾 ∈ MetSp ↔ 𝐿 ∈ MetSp)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xmspropd.1 | . . . 4 ⊢ (𝜑 → 𝐵 = (Base‘𝐾)) | |
| 2 | xmspropd.2 | . . . 4 ⊢ (𝜑 → 𝐵 = (Base‘𝐿)) | |
| 3 | xmspropd.3 | . . . 4 ⊢ (𝜑 → ((dist‘𝐾) ↾ (𝐵 × 𝐵)) = ((dist‘𝐿) ↾ (𝐵 × 𝐵))) | |
| 4 | xmspropd.4 | . . . 4 ⊢ (𝜑 → (TopOpen‘𝐾) = (TopOpen‘𝐿)) | |
| 5 | 1, 2, 3, 4 | xmspropd 15268 | . . 3 ⊢ (𝜑 → (𝐾 ∈ ∞MetSp ↔ 𝐿 ∈ ∞MetSp)) |
| 6 | 1 | sqxpeqd 4757 | . . . . . . 7 ⊢ (𝜑 → (𝐵 × 𝐵) = ((Base‘𝐾) × (Base‘𝐾))) |
| 7 | 6 | reseq2d 5019 | . . . . . 6 ⊢ (𝜑 → ((dist‘𝐾) ↾ (𝐵 × 𝐵)) = ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾)))) |
| 8 | 3, 7 | eqtr3d 2266 | . . . . 5 ⊢ (𝜑 → ((dist‘𝐿) ↾ (𝐵 × 𝐵)) = ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾)))) |
| 9 | 2 | sqxpeqd 4757 | . . . . . 6 ⊢ (𝜑 → (𝐵 × 𝐵) = ((Base‘𝐿) × (Base‘𝐿))) |
| 10 | 9 | reseq2d 5019 | . . . . 5 ⊢ (𝜑 → ((dist‘𝐿) ↾ (𝐵 × 𝐵)) = ((dist‘𝐿) ↾ ((Base‘𝐿) × (Base‘𝐿)))) |
| 11 | 8, 10 | eqtr3d 2266 | . . . 4 ⊢ (𝜑 → ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) = ((dist‘𝐿) ↾ ((Base‘𝐿) × (Base‘𝐿)))) |
| 12 | 1, 2 | eqtr3d 2266 | . . . . 5 ⊢ (𝜑 → (Base‘𝐾) = (Base‘𝐿)) |
| 13 | 12 | fveq2d 5652 | . . . 4 ⊢ (𝜑 → (Met‘(Base‘𝐾)) = (Met‘(Base‘𝐿))) |
| 14 | 11, 13 | eleq12d 2302 | . . 3 ⊢ (𝜑 → (((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) ∈ (Met‘(Base‘𝐾)) ↔ ((dist‘𝐿) ↾ ((Base‘𝐿) × (Base‘𝐿))) ∈ (Met‘(Base‘𝐿)))) |
| 15 | 5, 14 | anbi12d 473 | . 2 ⊢ (𝜑 → ((𝐾 ∈ ∞MetSp ∧ ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) ∈ (Met‘(Base‘𝐾))) ↔ (𝐿 ∈ ∞MetSp ∧ ((dist‘𝐿) ↾ ((Base‘𝐿) × (Base‘𝐿))) ∈ (Met‘(Base‘𝐿))))) |
| 16 | eqid 2231 | . . 3 ⊢ (TopOpen‘𝐾) = (TopOpen‘𝐾) | |
| 17 | eqid 2231 | . . 3 ⊢ (Base‘𝐾) = (Base‘𝐾) | |
| 18 | eqid 2231 | . . 3 ⊢ ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) = ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) | |
| 19 | 16, 17, 18 | isms 15244 | . 2 ⊢ (𝐾 ∈ MetSp ↔ (𝐾 ∈ ∞MetSp ∧ ((dist‘𝐾) ↾ ((Base‘𝐾) × (Base‘𝐾))) ∈ (Met‘(Base‘𝐾)))) |
| 20 | eqid 2231 | . . 3 ⊢ (TopOpen‘𝐿) = (TopOpen‘𝐿) | |
| 21 | eqid 2231 | . . 3 ⊢ (Base‘𝐿) = (Base‘𝐿) | |
| 22 | eqid 2231 | . . 3 ⊢ ((dist‘𝐿) ↾ ((Base‘𝐿) × (Base‘𝐿))) = ((dist‘𝐿) ↾ ((Base‘𝐿) × (Base‘𝐿))) | |
| 23 | 20, 21, 22 | isms 15244 | . 2 ⊢ (𝐿 ∈ MetSp ↔ (𝐿 ∈ ∞MetSp ∧ ((dist‘𝐿) ↾ ((Base‘𝐿) × (Base‘𝐿))) ∈ (Met‘(Base‘𝐿)))) |
| 24 | 15, 19, 23 | 3bitr4g 223 | 1 ⊢ (𝜑 → (𝐾 ∈ MetSp ↔ 𝐿 ∈ MetSp)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 = wceq 1398 ∈ wcel 2202 × cxp 4729 ↾ cres 4733 ‘cfv 5333 Basecbs 13143 distcds 13230 TopOpenctopn 13384 Metcmet 14613 ∞MetSpcxms 15127 MetSpcms 15128 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2204 ax-14 2205 ax-ext 2213 ax-coll 4209 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-cnex 8166 ax-resscn 8167 ax-1re 8169 ax-addrcl 8172 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ral 2516 df-rex 2517 df-reu 2518 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-inn 9187 df-2 9245 df-3 9246 df-4 9247 df-5 9248 df-6 9249 df-7 9250 df-8 9251 df-9 9252 df-ndx 13146 df-slot 13147 df-base 13149 df-tset 13240 df-rest 13385 df-topn 13386 df-top 14789 df-topon 14802 df-topsp 14822 df-xms 15130 df-ms 15131 |
| This theorem is referenced by: (None) |
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