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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 2820 | . . 3 ⊢ (norm‘𝐺) = (norm‘𝐺) | |
2 | eqid 2820 | . . 3 ⊢ (-g‘𝐺) = (-g‘𝐺) | |
3 | eqid 2820 | . . 3 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
4 | 1, 2, 3 | isngp 23198 | . 2 ⊢ (𝐺 ∈ NrmGrp ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ MetSp ∧ ((norm‘𝐺) ∘ (-g‘𝐺)) ⊆ (dist‘𝐺))) |
5 | 4 | simp1bi 1140 | 1 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ Grp) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2113 ⊆ wss 3929 ∘ ccom 5552 ‘cfv 6348 distcds 16567 Grpcgrp 18096 -gcsg 18098 MetSpcms 22921 normcnm 23179 NrmGrpcngp 23180 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1969 ax-7 2014 ax-8 2115 ax-9 2123 ax-10 2144 ax-11 2160 ax-12 2176 ax-ext 2792 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1084 df-tru 1539 df-ex 1780 df-nf 1784 df-sb 2069 df-clab 2799 df-cleq 2813 df-clel 2892 df-nfc 2962 df-rab 3146 df-v 3493 df-dif 3932 df-un 3934 df-in 3936 df-ss 3945 df-nul 4285 df-if 4461 df-sn 4561 df-pr 4563 df-op 4567 df-uni 4832 df-br 5060 df-opab 5122 df-co 5557 df-iota 6307 df-fv 6356 df-ngp 23186 |
This theorem is referenced by: ngpds 23206 ngpds2 23208 ngpds3 23210 ngprcan 23212 isngp4 23214 ngpinvds 23215 ngpsubcan 23216 nmf 23217 nmge0 23219 nmeq0 23220 nminv 23223 nmmtri 23224 nmsub 23225 nmrtri 23226 nm2dif 23227 nmtri 23228 nmtri2 23229 ngpi 23230 nm0 23231 ngptgp 23238 tngngp2 23254 tnggrpr 23257 nrmtngnrm 23260 nlmdsdi 23283 nlmdsdir 23284 nrginvrcnlem 23293 ngpocelbl 23306 nmo0 23337 nmotri 23341 0nghm 23343 nmoid 23344 idnghm 23345 nmods 23346 nmcn 23445 nmoleub2lem2 23713 nmhmcn 23717 cphipval2 23837 4cphipval2 23838 cphipval 23839 ipcnlem2 23840 nglmle 23898 qqhcn 31251 |
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