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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 2760 | . . . 4 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | eqid 2760 | . . . 4 ⊢ ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅))) = ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅))) | |
| 3 | eqid 2760 | . . . 4 ⊢ (ℤMod‘𝑅) = (ℤMod‘𝑅) | |
| 4 | 1, 2, 3 | isrrext 34632 | . . 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 1569 ∈ wcel 2144 × cxp 5648 ↾ cres 5652 ‘cfv 6538 0cc0 11200 Basecbs 17387 distcds 17437 DivRingcdr 20980 metUnifcmetu 21669 ℤModczlm 21806 chrcchr 21807 UnifStcuss 24572 CUnifSpccusp 24615 NrmRingcnrg 24898 NrmModcnlm 24899 ℝExt crrext 34626 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5103 df-opab 5167 df-xp 5656 df-res 5662 df-iota 6494 df-fv 6546 df-rrext 34631 |
| This theorem is used by: rrexttps 34638 rrexthaus 34639 rrhfe 34644 rrhcne 34645 rrhqima 34646 sitgclg 34974 |
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