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| Mirrors > Home > MPE Home > Th. List > Mathboxes > rrextnrg | Structured version Visualization version GIF version | ||
| Description: An extension of ℝ is a normed ring. (Contributed by Thierry Arnoux, 2-May-2018.) |
| Ref | Expression |
|---|---|
| rrextnrg | ⊢ (𝑅 ∈ ℝExt → 𝑅 ∈ NrmRing) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2763 | . . . 4 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | eqid 2763 | . . . 4 ⊢ ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅))) = ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅))) | |
| 3 | eqid 2763 | . . . 4 ⊢ (ℤMod‘𝑅) = (ℤMod‘𝑅) | |
| 4 | 1, 2, 3 | isrrext 34699 | . . 3 ⊢ (𝑅 ∈ ℝExt ↔ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ DivRing) ∧ ((ℤMod‘𝑅) ∈ NrmMod ∧ (chr‘𝑅) = 0) ∧ (𝑅 ∈ CUnifSp ∧ (UnifSt‘𝑅) = (metUnif‘((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅))))))) |
| 5 | 4 | simp1bi 1163 | . 2 ⊢ (𝑅 ∈ ℝExt → (𝑅 ∈ NrmRing ∧ 𝑅 ∈ DivRing)) |
| 6 | 5 | simpld 500 | 1 ⊢ (𝑅 ∈ ℝExt → 𝑅 ∈ NrmRing) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2147 × cxp 5653 ↾ cres 5657 ‘cfv 6555 0cc0 11224 Basecbs 17413 distcds 17463 DivRingcdr 21007 metUnifcmetu 21696 ℤModczlm 21833 chrcchr 21834 UnifStcuss 24599 CUnifSpccusp 24642 NrmRingcnrg 24925 NrmModcnlm 24926 ℝExt crrext 34693 |
| 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-xp 5661 df-res 5667 df-iota 6509 df-fv 6563 df-rrext 34698 |
| This theorem is used by: rrexttps 34705 rrexthaus 34706 rrhfe 34711 rrhcne 34712 rrhqima 34713 sitgclg 35041 |
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