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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 2763 | . . 3 ⊢ (norm‘𝐺) = (norm‘𝐺) | |
| 2 | eqid 2763 | . . 3 ⊢ (-g‘𝐺) = (-g‘𝐺) | |
| 3 | eqid 2763 | . . 3 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
| 4 | 1, 2, 3 | isngp 24942 | . 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 2147 ⊆ wss 3900 ∘ ccom 5659 ‘cfv 6555 distcds 17463 Grpcgrp 19170 -gcsg 19172 MetSpcms 24664 normcnm 24922 NrmGrpcngp 24923 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-co 5664 df-iota 6509 df-fv 6563 df-ngp 24929 |
| This theorem is used by: ngpxms 24947 ngptps 24948 ngpmet 24949 isngp4 24958 nmmtri 24968 nmrtri 24970 subgngp 24981 ngptgp 24982 tngngp2 24998 nlmvscnlem2 25031 nlmvscnlem1 25032 nlmvscn 25033 nrginvrcn 25038 nghmcn 25091 nmcn 25191 nmhmcn 25468 ipcnlem2 25592 ipcnlem1 25593 ipcn 25594 nglmle 25650 cssbn 25723 minveclem2 25774 minveclem3b 25776 minveclem3 25777 minveclem4 25780 minveclem7 25783 |
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