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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 20786 | . . 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 6957 | . 2 ⊢ (𝐹 ∈ (AbsVal‘𝑅) → 𝑅 ∈ Ring) |
| 3 | abvf.a | . 2 ⊢ 𝐴 = (AbsVal‘𝑅) | |
| 4 | 2, 3 | eleq2s 2854 | 1 ⊢ (𝐹 ∈ 𝐴 → 𝑅 ∈ Ring) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∀wral 3051 {crab 3389 class class class wbr 5085 ‘cfv 6498 (class class class)co 7367 ↑m cmap 8773 0cc0 11038 + caddc 11041 · cmul 11043 +∞cpnf 11176 ≤ cle 11180 [,)cico 13300 Basecbs 17179 +gcplusg 17220 .rcmulr 17221 0gc0g 17402 Ringcrg 20214 AbsValcabv 20785 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-sep 5231 ax-nul 5241 ax-pr 5375 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-mpt 5167 df-xp 5637 df-rel 5638 df-cnv 5639 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6454 df-fv 6506 df-abv 20786 |
| This theorem is referenced by: abvfge0 20791 abveq0 20795 abvmul 20798 abvtri 20799 abv0 20800 abv1z 20801 abvneg 20803 abvsubtri 20804 abvpropd 20812 abvmet 24540 nrgring 24628 tngnrg 24639 abvcxp 27578 |
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