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| Mirrors > Home > MPE Home > Th. List > ngpms | Structured version Visualization version GIF version | ||
| Description: A normed group is a metric space. (Contributed by Mario Carneiro, 2-Oct-2015.) |
| Ref | Expression |
|---|---|
| ngpms | ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ MetSp) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2760 | . . 3 ⊢ (norm‘𝐺) = (norm‘𝐺) | |
| 2 | eqid 2760 | . . 3 ⊢ (-g‘𝐺) = (-g‘𝐺) | |
| 3 | eqid 2760 | . . 3 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
| 4 | 1, 2, 3 | isngp 24915 | . 2 ⊢ (𝐺 ∈ NrmGrp ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ MetSp ∧ ((norm‘𝐺) ∘ (-g‘𝐺)) ⊆ (dist‘𝐺))) |
| 5 | 4 | simp2bi 1164 | 1 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ MetSp) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 ⊆ wss 3895 ∘ ccom 5654 ‘cfv 6538 distcds 17437 Grpcgrp 19144 -gcsg 19146 MetSpcms 24637 normcnm 24895 NrmGrpcngp 24896 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-co 5659 df-iota 6494 df-fv 6546 df-ngp 24902 |
| This theorem is used by: ngpxms 24920 ngptps 24921 ngpmet 24922 isngp4 24931 nmmtri 24941 nmrtri 24943 subgngp 24954 ngptgp 24955 tngngp2 24971 nlmvscnlem2 25004 nlmvscnlem1 25005 nlmvscn 25006 nrginvrcn 25011 nghmcn 25064 nmcn 25164 nmhmcn 25441 ipcnlem2 25565 ipcnlem1 25566 ipcn 25567 nglmle 25623 cssbn 25696 minveclem2 25747 minveclem3b 25749 minveclem3 25750 minveclem4 25753 minveclem7 25756 |
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