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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 20858 | . . 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 6985 | . 2 ⊢ (𝐹 ∈ (AbsVal‘𝑅) → 𝑅 ∈ Ring) |
| 3 | abvf.a | . 2 ⊢ 𝐴 = (AbsVal‘𝑅) | |
| 4 | 2, 3 | eleq2s 2880 | 1 ⊢ (𝐹 ∈ 𝐴 → 𝑅 ∈ Ring) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 = wceq 1560 ∈ wcel 2142 ∀wral 3076 {crab 3414 class class class wbr 5100 ‘cfv 6521 (class class class)co 7396 ↑m cmap 8808 0cc0 11073 + caddc 11076 · cmul 11078 +∞cpnf 11213 ≤ cle 11217 [,)cico 13351 Basecbs 17245 +gcplusg 17286 .rcmulr 17287 0gc0g 17468 Ringcrg 20283 AbsValcabv 20857 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pr 5390 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-mpt 5182 df-xp 5653 df-rel 5654 df-cnv 5655 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6477 df-fv 6529 df-abv 20858 |
| This theorem is referenced by: abvfge0 20863 abveq0 20867 abvmul 20870 abvtri 20871 abv0 20872 abv1z 20873 abvneg 20875 abvsubtri 20876 abvpropd 20884 abvmet 24635 nrgring 24723 tngnrg 24734 abvcxp 27679 |
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