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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 17349 | . . . 4 ⊢ dist = Slot (dist‘ndx) | |
| 2 | dsndxntsetndx 17356 | . . . 4 ⊢ (dist‘ndx) ≠ (TopSet‘ndx) | |
| 3 | 1, 2 | setsnid 17178 | . . 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 6854 | . . . . 5 ⊢ − ∈ V |
| 6 | coexg 7880 | . . . . 5 ⊢ ((𝑁 ∈ 𝑉 ∧ − ∈ V) → (𝑁 ∘ − ) ∈ V) | |
| 7 | 5, 6 | mpan2 692 | . . . 4 ⊢ (𝑁 ∈ 𝑉 → (𝑁 ∘ − ) ∈ V) |
| 8 | 1 | setsid 17177 | . . . 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 2736 | . . . . 5 ⊢ (𝑁 ∘ − ) = (𝑁 ∘ − ) | |
| 12 | eqid 2736 | . . . . 5 ⊢ (MetOpen‘(𝑁 ∘ − )) = (MetOpen‘(𝑁 ∘ − )) | |
| 13 | 10, 4, 11, 12 | tngval 24604 | . . . 4 ⊢ ((𝐺 ∈ V ∧ 𝑁 ∈ 𝑉) → 𝑇 = ((𝐺 sSet 〈(dist‘ndx), (𝑁 ∘ − )〉) sSet 〈(TopSet‘ndx), (MetOpen‘(𝑁 ∘ − ))〉)) |
| 14 | 13 | fveq2d 6844 | . . 3 ⊢ ((𝐺 ∈ V ∧ 𝑁 ∈ 𝑉) → (dist‘𝑇) = (dist‘((𝐺 sSet 〈(dist‘ndx), (𝑁 ∘ − )〉) sSet 〈(TopSet‘ndx), (MetOpen‘(𝑁 ∘ − ))〉))) |
| 15 | 3, 9, 14 | 3eqtr4a 2797 | . 2 ⊢ ((𝐺 ∈ V ∧ 𝑁 ∈ 𝑉) → (𝑁 ∘ − ) = (dist‘𝑇)) |
| 16 | co02 6225 | . . . . 5 ⊢ (𝑁 ∘ ∅) = ∅ | |
| 17 | 1 | str0 17159 | . . . . 5 ⊢ ∅ = (dist‘∅) |
| 18 | 16, 17 | eqtri 2759 | . . . 4 ⊢ (𝑁 ∘ ∅) = (dist‘∅) |
| 19 | fvprc 6832 | . . . . . 6 ⊢ (¬ 𝐺 ∈ V → (-g‘𝐺) = ∅) | |
| 20 | 4, 19 | eqtrid 2783 | . . . . 5 ⊢ (¬ 𝐺 ∈ V → − = ∅) |
| 21 | 20 | coeq2d 5817 | . . . 4 ⊢ (¬ 𝐺 ∈ V → (𝑁 ∘ − ) = (𝑁 ∘ ∅)) |
| 22 | reldmtng 24603 | . . . . . . 7 ⊢ Rel dom toNrmGrp | |
| 23 | 22 | ovprc1 7406 | . . . . . 6 ⊢ (¬ 𝐺 ∈ V → (𝐺 toNrmGrp 𝑁) = ∅) |
| 24 | 10, 23 | eqtrid 2783 | . . . . 5 ⊢ (¬ 𝐺 ∈ V → 𝑇 = ∅) |
| 25 | 24 | fveq2d 6844 | . . . 4 ⊢ (¬ 𝐺 ∈ V → (dist‘𝑇) = (dist‘∅)) |
| 26 | 18, 21, 25 | 3eqtr4a 2797 | . . 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 3429 ∅c0 4273 〈cop 4573 ∘ ccom 5635 ‘cfv 6498 (class class class)co 7367 sSet csts 17133 ndxcnx 17163 TopSetcts 17226 distcds 17229 -gcsg 18911 MetOpencmopn 21342 toNrmGrp ctng 24543 |
| 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 2708 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-iun 4935 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-om 7818 df-2nd 7943 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-er 8643 df-en 8894 df-dom 8895 df-sdom 8896 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-nn 12175 df-2 12244 df-3 12245 df-4 12246 df-5 12247 df-6 12248 df-7 12249 df-8 12250 df-9 12251 df-n0 12438 df-z 12525 df-dec 12645 df-sets 17134 df-slot 17152 df-ndx 17164 df-tset 17239 df-ds 17242 df-tng 24549 |
| This theorem is referenced by: tngtset 24614 tngtopn 24615 tngnm 24616 tngngp2 24617 tngngpd 24618 nrmtngdist 24622 tngnrg 24639 cnindmet 25129 tcphds 25198 |
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