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| Mirrors > Home > MPE Home > Th. List > tngds | Structured version Visualization version GIF version | ||
| Description: The metric function of a structure augmented with a norm. (Contributed by Mario Carneiro, 3-Oct-2015.) (Proof shortened by AV, 29-Oct-2024.) |
| Ref | Expression |
|---|---|
| tngbas.t | ⊢ 𝑇 = (𝐺 toNrmGrp 𝑁) |
| tngds.2 | ⊢ − = (-g‘𝐺) |
| Ref | Expression |
|---|---|
| tngds | ⊢ (𝑁 ∈ 𝑉 → (𝑁 ∘ − ) = (dist‘𝑇)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dsid 17343 | . . . 4 ⊢ dist = Slot (dist‘ndx) | |
| 2 | dsndxntsetndx 17350 | . . . 4 ⊢ (dist‘ndx) ≠ (TopSet‘ndx) | |
| 3 | 1, 2 | setsnid 17172 | . . 3 ⊢ (dist‘(𝐺 sSet 〈(dist‘ndx), (𝑁 ∘ − )〉)) = (dist‘((𝐺 sSet 〈(dist‘ndx), (𝑁 ∘ − )〉) sSet 〈(TopSet‘ndx), (MetOpen‘(𝑁 ∘ − ))〉)) |
| 4 | tngds.2 | . . . . . 6 ⊢ − = (-g‘𝐺) | |
| 5 | 4 | fvexi 6849 | . . . . 5 ⊢ − ∈ V |
| 6 | coexg 7874 | . . . . 5 ⊢ ((𝑁 ∈ 𝑉 ∧ − ∈ V) → (𝑁 ∘ − ) ∈ V) | |
| 7 | 5, 6 | mpan2 692 | . . . 4 ⊢ (𝑁 ∈ 𝑉 → (𝑁 ∘ − ) ∈ V) |
| 8 | 1 | setsid 17171 | . . . 4 ⊢ ((𝐺 ∈ V ∧ (𝑁 ∘ − ) ∈ V) → (𝑁 ∘ − ) = (dist‘(𝐺 sSet 〈(dist‘ndx), (𝑁 ∘ − )〉))) |
| 9 | 7, 8 | sylan2 594 | . . 3 ⊢ ((𝐺 ∈ V ∧ 𝑁 ∈ 𝑉) → (𝑁 ∘ − ) = (dist‘(𝐺 sSet 〈(dist‘ndx), (𝑁 ∘ − )〉))) |
| 10 | tngbas.t | . . . . 5 ⊢ 𝑇 = (𝐺 toNrmGrp 𝑁) | |
| 11 | eqid 2737 | . . . . 5 ⊢ (𝑁 ∘ − ) = (𝑁 ∘ − ) | |
| 12 | eqid 2737 | . . . . 5 ⊢ (MetOpen‘(𝑁 ∘ − )) = (MetOpen‘(𝑁 ∘ − )) | |
| 13 | 10, 4, 11, 12 | tngval 24617 | . . . 4 ⊢ ((𝐺 ∈ V ∧ 𝑁 ∈ 𝑉) → 𝑇 = ((𝐺 sSet 〈(dist‘ndx), (𝑁 ∘ − )〉) sSet 〈(TopSet‘ndx), (MetOpen‘(𝑁 ∘ − ))〉)) |
| 14 | 13 | fveq2d 6839 | . . 3 ⊢ ((𝐺 ∈ V ∧ 𝑁 ∈ 𝑉) → (dist‘𝑇) = (dist‘((𝐺 sSet 〈(dist‘ndx), (𝑁 ∘ − )〉) sSet 〈(TopSet‘ndx), (MetOpen‘(𝑁 ∘ − ))〉))) |
| 15 | 3, 9, 14 | 3eqtr4a 2798 | . 2 ⊢ ((𝐺 ∈ V ∧ 𝑁 ∈ 𝑉) → (𝑁 ∘ − ) = (dist‘𝑇)) |
| 16 | co02 6220 | . . . . 5 ⊢ (𝑁 ∘ ∅) = ∅ | |
| 17 | 1 | str0 17153 | . . . . 5 ⊢ ∅ = (dist‘∅) |
| 18 | 16, 17 | eqtri 2760 | . . . 4 ⊢ (𝑁 ∘ ∅) = (dist‘∅) |
| 19 | fvprc 6827 | . . . . . 6 ⊢ (¬ 𝐺 ∈ V → (-g‘𝐺) = ∅) | |
| 20 | 4, 19 | eqtrid 2784 | . . . . 5 ⊢ (¬ 𝐺 ∈ V → − = ∅) |
| 21 | 20 | coeq2d 5812 | . . . 4 ⊢ (¬ 𝐺 ∈ V → (𝑁 ∘ − ) = (𝑁 ∘ ∅)) |
| 22 | reldmtng 24616 | . . . . . . 7 ⊢ Rel dom toNrmGrp | |
| 23 | 22 | ovprc1 7400 | . . . . . 6 ⊢ (¬ 𝐺 ∈ V → (𝐺 toNrmGrp 𝑁) = ∅) |
| 24 | 10, 23 | eqtrid 2784 | . . . . 5 ⊢ (¬ 𝐺 ∈ V → 𝑇 = ∅) |
| 25 | 24 | fveq2d 6839 | . . . 4 ⊢ (¬ 𝐺 ∈ V → (dist‘𝑇) = (dist‘∅)) |
| 26 | 18, 21, 25 | 3eqtr4a 2798 | . . 3 ⊢ (¬ 𝐺 ∈ V → (𝑁 ∘ − ) = (dist‘𝑇)) |
| 27 | 26 | adantr 480 | . 2 ⊢ ((¬ 𝐺 ∈ V ∧ 𝑁 ∈ 𝑉) → (𝑁 ∘ − ) = (dist‘𝑇)) |
| 28 | 15, 27 | pm2.61ian 812 | 1 ⊢ (𝑁 ∈ 𝑉 → (𝑁 ∘ − ) = (dist‘𝑇)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 Vcvv 3430 ∅c0 4274 〈cop 4574 ∘ ccom 5629 ‘cfv 6493 (class class class)co 7361 sSet csts 17127 ndxcnx 17157 TopSetcts 17220 distcds 17223 -gcsg 18905 MetOpencmopn 21337 toNrmGrp ctng 24556 |
| 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-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-cnex 11088 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-addrcl 11093 ax-mulcl 11094 ax-mulrcl 11095 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-i2m1 11100 ax-1ne0 11101 ax-1rid 11102 ax-rnegex 11103 ax-rrecex 11104 ax-cnre 11105 ax-pre-lttri 11106 ax-pre-lttrn 11107 ax-pre-ltadd 11108 ax-pre-mulgt0 11109 |
| 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 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 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-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 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-om 7812 df-2nd 7937 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-sub 11373 df-neg 11374 df-nn 12169 df-2 12238 df-3 12239 df-4 12240 df-5 12241 df-6 12242 df-7 12243 df-8 12244 df-9 12245 df-n0 12432 df-z 12519 df-dec 12639 df-sets 17128 df-slot 17146 df-ndx 17158 df-tset 17233 df-ds 17236 df-tng 24562 |
| This theorem is referenced by: tngtset 24627 tngtopn 24628 tngnm 24629 tngngp2 24630 tngngpd 24631 nrmtngdist 24635 tngnrg 24652 cnindmet 25142 tcphds 25211 |
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