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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 2798 | . . 3 ⊢ (norm‘𝐺) = (norm‘𝐺) | |
2 | eqid 2798 | . . 3 ⊢ (-g‘𝐺) = (-g‘𝐺) | |
3 | eqid 2798 | . . 3 ⊢ (dist‘𝐺) = (dist‘𝐺) | |
4 | 1, 2, 3 | isngp 23202 | . 2 ⊢ (𝐺 ∈ NrmGrp ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ MetSp ∧ ((norm‘𝐺) ∘ (-g‘𝐺)) ⊆ (dist‘𝐺))) |
5 | 4 | simp1bi 1142 | 1 ⊢ (𝐺 ∈ NrmGrp → 𝐺 ∈ Grp) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2111 ⊆ wss 3881 ∘ ccom 5523 ‘cfv 6324 distcds 16566 Grpcgrp 18095 -gcsg 18097 MetSpcms 22925 normcnm 23183 NrmGrpcngp 23184 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-rab 3115 df-v 3443 df-un 3886 df-in 3888 df-ss 3898 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-br 5031 df-opab 5093 df-co 5528 df-iota 6283 df-fv 6332 df-ngp 23190 |
This theorem is referenced by: ngpds 23210 ngpds2 23212 ngpds3 23214 ngprcan 23216 isngp4 23218 ngpinvds 23219 ngpsubcan 23220 nmf 23221 nmge0 23223 nmeq0 23224 nminv 23227 nmmtri 23228 nmsub 23229 nmrtri 23230 nm2dif 23231 nmtri 23232 nmtri2 23233 ngpi 23234 nm0 23235 ngptgp 23242 tngngp2 23258 tnggrpr 23261 nrmtngnrm 23264 nlmdsdi 23287 nlmdsdir 23288 nrginvrcnlem 23297 ngpocelbl 23310 nmo0 23341 nmotri 23345 0nghm 23347 nmoid 23348 idnghm 23349 nmods 23350 nmcn 23449 nmoleub2lem2 23721 nmhmcn 23725 cphipval2 23845 4cphipval2 23846 cphipval 23847 ipcnlem2 23848 nglmle 23906 qqhcn 31342 |
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