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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 2762 | . . . 4 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
| 2 | eqid 2762 | . . . 4 ⊢ ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅))) = ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅))) | |
| 3 | eqid 2762 | . . . 4 ⊢ (ℤMod‘𝑅) = (ℤMod‘𝑅) | |
| 4 | 1, 2, 3 | isrrext 34495 | . . 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 2145 × cxp 5657 ↾ cres 5661 ‘cfv 6537 0cc0 11125 Basecbs 17303 distcds 17353 DivRingcdr 20889 metUnifcmetu 21575 ℤModczlm 21712 chrcchr 21713 UnifStcuss 24478 CUnifSpccusp 24521 NrmRingcnrg 24804 NrmModcnlm 24805 ℝExt crrext 34489 |
| 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 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2734 |
| 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 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-br 5108 df-opab 5172 df-xp 5665 df-res 5671 df-iota 6493 df-fv 6545 df-rrext 34494 |
| This theorem is used by: rrexttps 34501 rrexthaus 34502 rrhfe 34507 rrhcne 34508 rrhqima 34509 sitgclg 34838 |
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