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| Mirrors > Home > MPE Home > Th. List > abvrcl | Structured version Visualization version GIF version | ||
| Description: Reverse closure for the absolute value set. (Contributed by Mario Carneiro, 8-Sep-2014.) |
| Ref | Expression |
|---|---|
| abvf.a | ⊢ 𝐴 = (AbsVal‘𝑅) |
| Ref | Expression |
|---|---|
| abvrcl | ⊢ (𝐹 ∈ 𝐴 → 𝑅 ∈ Ring) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-abv 21078 | . . 3 ⊢ AbsVal = (𝑟 ∈ Ring ↦ {𝑓 ∈ ((0[,)+∞) ↑m (Base‘𝑟)) ∣ ∀𝑥 ∈ (Base‘𝑟)(((𝑓‘𝑥) = 0 ↔ 𝑥 = (0g‘𝑟)) ∧ ∀𝑦 ∈ (Base‘𝑟)((𝑓‘(𝑥(.r‘𝑟)𝑦)) = ((𝑓‘𝑥) · (𝑓‘𝑦)) ∧ (𝑓‘(𝑥(+g‘𝑟)𝑦)) ≤ ((𝑓‘𝑥) + (𝑓‘𝑦))))}) | |
| 2 | 1 | mptrcl 7011 | . 2 ⊢ (𝐹 ∈ (AbsVal‘𝑅) → 𝑅 ∈ Ring) |
| 3 | abvf.a | . 2 ⊢ 𝐴 = (AbsVal‘𝑅) | |
| 4 | 2, 3 | eleq2s 2881 | 1 ⊢ (𝐹 ∈ 𝐴 → 𝑅 ∈ Ring) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1569 ∈ wcel 2146 ∀wral 3079 {crab 3415 class class class wbr 5105 ‘cfv 6546 (class class class)co 7427 ↑m cmap 8858 0cc0 11210 + caddc 11213 · cmul 11215 +∞cpnf 11350 ≤ cle 11354 [,)cico 13488 Basecbs 17399 +gcplusg 17440 .rcmulr 17441 0gc0g 17622 Ringcrg 20471 AbsValcabv 21077 |
| 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 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-nul 5262 ax-pr 5394 |
| 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-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-rab 3416 df-v 3455 df-ss 3900 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-br 5106 df-opab 5170 df-mpt 5189 df-xp 5660 df-rel 5661 df-cnv 5662 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-iota 6500 df-fv 6554 df-abv 21078 |
| This theorem is used by: abvfge0 21083 abveq0 21087 abvmul 21090 abvtri 21091 abv0 21092 abv1z 21093 abvneg 21095 abvsubtri 21096 abvpropd 21104 abvmet 24906 nrgring 24994 tngnrg 25005 abvcxp 27954 |
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