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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 2762 | . . 3 ⊢ (norm‘𝐺) = (norm‘𝐺) | |
| 2 | eqid 2762 | . . 3 ⊢ (-g‘𝐺) = (-g‘𝐺) | |
| 3 | eqid 2762 | . . 3 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
| 4 | 1, 2, 3 | isngp 24764 | . 2 ⊢ (𝐺 ∈ NrmGrp ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ MetSp ∧ ((norm‘𝐺) ∘ (-g‘𝐺)) ⊆ (dist‘𝐺))) |
| 5 | 4 | simp2bi 1163 | 1 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ MetSp) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2142 ⊆ wss 3904 ∘ ccom 5664 ‘cfv 6536 distcds 17325 Grpcgrp 19006 -gcsg 19008 MetSpcms 24486 normcnm 24744 NrmGrpcngp 24745 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-ext 2734 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-rab 3416 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-sn 4589 df-pr 4591 df-op 4595 df-uni 4872 df-br 5109 df-opab 5173 df-co 5669 df-iota 6492 df-fv 6544 df-ngp 24751 |
| This theorem is used by: ngpxms 24769 ngptps 24770 ngpmet 24771 isngp4 24780 nmmtri 24790 nmrtri 24792 subgngp 24803 ngptgp 24804 tngngp2 24820 nlmvscnlem2 24853 nlmvscnlem1 24854 nlmvscn 24855 nrginvrcn 24860 nghmcn 24913 nmcn 25013 nmhmcn 25290 ipcnlem2 25414 ipcnlem1 25415 ipcn 25416 nglmle 25472 cssbn 25545 minveclem2 25596 minveclem3b 25598 minveclem3 25599 minveclem4 25602 minveclem7 25605 |
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