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| Mirrors > Home > MPE Home > Th. List > ngpgrp | Structured version Visualization version GIF version | ||
| Description: A normed group is a group. (Contributed by Mario Carneiro, 2-Oct-2015.) |
| Ref | Expression |
|---|---|
| ngpgrp | ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ Grp) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2769 | . . 3 ⊢ (norm‘𝐺) = (norm‘𝐺) | |
| 2 | eqid 2769 | . . 3 ⊢ (-g‘𝐺) = (-g‘𝐺) | |
| 3 | eqid 2769 | . . 3 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
| 4 | 1, 2, 3 | isngp 24724 | . 2 ⊢ (𝐺 ∈ NrmGrp ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ MetSp ∧ ((norm‘𝐺) ∘ (-g‘𝐺)) ⊆ (dist‘𝐺))) |
| 5 | 4 | simp1bi 1161 | 1 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ Grp) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2149 ⊆ wss 3913 ∘ ccom 5668 ‘cfv 6539 distcds 17321 Grpcgrp 19002 -gcsg 19004 MetSpcms 24446 normcnm 24704 NrmGrpcngp 24705 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-co 5673 df-iota 6495 df-fv 6547 df-ngp 24711 |
| This theorem is referenced by: ngpds 24732 ngpds2 24734 ngpds3 24736 ngprcan 24738 isngp4 24740 ngpinvds 24741 ngpsubcan 24742 nmf 24743 nmge0 24745 nmeq0 24746 nminv 24749 nmmtri 24750 nmsub 24751 nmrtri 24752 nm2dif 24753 nmtri 24754 nmtri2 24755 ngpi 24756 nm0 24757 ngptgp 24764 tngngp2 24780 tnggrpr 24783 nrmtngnrm 24786 nlmdsdi 24809 nlmdsdir 24810 nrginvrcnlem 24819 ngpocelbl 24832 nmo0 24863 nmotri 24867 0nghm 24869 nmoid 24870 idnghm 24871 nmods 24872 nmcn 24973 nmoleub2lem2 25246 nmhmcn 25250 cphpyth 25346 cphipval2 25371 4cphipval2 25372 cphipval 25373 ipcnlem2 25374 nglmle 25432 qqhcn 34328 |
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