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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 19588 | . . 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 6777 | . 2 ⊢ (𝐹 ∈ (AbsVal‘𝑅) → 𝑅 ∈ Ring) |
3 | abvf.a | . 2 ⊢ 𝐴 = (AbsVal‘𝑅) | |
4 | 2, 3 | eleq2s 2931 | 1 ⊢ (𝐹 ∈ 𝐴 → 𝑅 ∈ Ring) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 208 ∧ wa 398 = wceq 1537 ∈ wcel 2114 ∀wral 3138 {crab 3142 class class class wbr 5066 ‘cfv 6355 (class class class)co 7156 ↑m cmap 8406 0cc0 10537 + caddc 10540 · cmul 10542 +∞cpnf 10672 ≤ cle 10676 [,)cico 12741 Basecbs 16483 +gcplusg 16565 .rcmulr 16566 0gc0g 16713 Ringcrg 19297 AbsValcabv 19587 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-mpt 5147 df-xp 5561 df-rel 5562 df-cnv 5563 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-iota 6314 df-fv 6363 df-abv 19588 |
This theorem is referenced by: abvfge0 19593 abveq0 19597 abvmul 19600 abvtri 19601 abv0 19602 abv1z 19603 abvneg 19605 abvsubtri 19606 abvpropd 19613 abvmet 23185 nrgring 23272 tngnrg 23283 abvcxp 26191 |
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