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Mirrors > Home > MPE Home > Th. List > opprrngb | Structured version Visualization version GIF version |
Description: A class is a non-unital ring if and only if its opposite is a non-unital ring. Bidirectional form of opprrng 20247. (Contributed by AV, 15-Feb-2025.) |
Ref | Expression |
---|---|
opprbas.1 | ⊢ 𝑂 = (oppr‘𝑅) |
Ref | Expression |
---|---|
opprrngb | ⊢ (𝑅 ∈ Rng ↔ 𝑂 ∈ Rng) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opprbas.1 | . . 3 ⊢ 𝑂 = (oppr‘𝑅) | |
2 | 1 | opprrng 20247 | . 2 ⊢ (𝑅 ∈ Rng → 𝑂 ∈ Rng) |
3 | eqid 2726 | . . . 4 ⊢ (oppr‘𝑂) = (oppr‘𝑂) | |
4 | 3 | opprrng 20247 | . . 3 ⊢ (𝑂 ∈ Rng → (oppr‘𝑂) ∈ Rng) |
5 | eqidd 2727 | . . . . 5 ⊢ (⊤ → (Base‘𝑅) = (Base‘𝑅)) | |
6 | eqid 2726 | . . . . . . . 8 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
7 | 1, 6 | opprbas 20243 | . . . . . . 7 ⊢ (Base‘𝑅) = (Base‘𝑂) |
8 | 3, 7 | opprbas 20243 | . . . . . 6 ⊢ (Base‘𝑅) = (Base‘(oppr‘𝑂)) |
9 | 8 | a1i 11 | . . . . 5 ⊢ (⊤ → (Base‘𝑅) = (Base‘(oppr‘𝑂))) |
10 | eqid 2726 | . . . . . . . . 9 ⊢ (+g‘𝑅) = (+g‘𝑅) | |
11 | 1, 10 | oppradd 20245 | . . . . . . . 8 ⊢ (+g‘𝑅) = (+g‘𝑂) |
12 | 3, 11 | oppradd 20245 | . . . . . . 7 ⊢ (+g‘𝑅) = (+g‘(oppr‘𝑂)) |
13 | 12 | oveqi 7418 | . . . . . 6 ⊢ (𝑥(+g‘𝑅)𝑦) = (𝑥(+g‘(oppr‘𝑂))𝑦) |
14 | 13 | a1i 11 | . . . . 5 ⊢ ((⊤ ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (𝑥(+g‘𝑅)𝑦) = (𝑥(+g‘(oppr‘𝑂))𝑦)) |
15 | eqid 2726 | . . . . . . . 8 ⊢ (.r‘𝑂) = (.r‘𝑂) | |
16 | eqid 2726 | . . . . . . . 8 ⊢ (.r‘(oppr‘𝑂)) = (.r‘(oppr‘𝑂)) | |
17 | 7, 15, 3, 16 | opprmul 20239 | . . . . . . 7 ⊢ (𝑥(.r‘(oppr‘𝑂))𝑦) = (𝑦(.r‘𝑂)𝑥) |
18 | eqid 2726 | . . . . . . . 8 ⊢ (.r‘𝑅) = (.r‘𝑅) | |
19 | 6, 18, 1, 15 | opprmul 20239 | . . . . . . 7 ⊢ (𝑦(.r‘𝑂)𝑥) = (𝑥(.r‘𝑅)𝑦) |
20 | 17, 19 | eqtr2i 2755 | . . . . . 6 ⊢ (𝑥(.r‘𝑅)𝑦) = (𝑥(.r‘(oppr‘𝑂))𝑦) |
21 | 20 | a1i 11 | . . . . 5 ⊢ ((⊤ ∧ (𝑥 ∈ (Base‘𝑅) ∧ 𝑦 ∈ (Base‘𝑅))) → (𝑥(.r‘𝑅)𝑦) = (𝑥(.r‘(oppr‘𝑂))𝑦)) |
22 | 5, 9, 14, 21 | rngpropd 20079 | . . . 4 ⊢ (⊤ → (𝑅 ∈ Rng ↔ (oppr‘𝑂) ∈ Rng)) |
23 | 22 | mptru 1540 | . . 3 ⊢ (𝑅 ∈ Rng ↔ (oppr‘𝑂) ∈ Rng) |
24 | 4, 23 | sylibr 233 | . 2 ⊢ (𝑂 ∈ Rng → 𝑅 ∈ Rng) |
25 | 2, 24 | impbii 208 | 1 ⊢ (𝑅 ∈ Rng ↔ 𝑂 ∈ Rng) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 ∧ wa 395 = wceq 1533 ⊤wtru 1534 ∈ wcel 2098 ‘cfv 6537 (class class class)co 7405 Basecbs 17153 +gcplusg 17206 .rcmulr 17207 Rngcrng 20057 opprcoppr 20235 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7722 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6294 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6489 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7853 df-2nd 7975 df-tpos 8212 df-frecs 8267 df-wrecs 8298 df-recs 8372 df-rdg 8411 df-er 8705 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-2 12279 df-3 12280 df-sets 17106 df-slot 17124 df-ndx 17136 df-base 17154 df-plusg 17219 df-mulr 17220 df-0g 17396 df-mgm 18573 df-sgrp 18652 df-mnd 18668 df-grp 18866 df-cmn 19702 df-abl 19703 df-mgp 20040 df-rng 20058 df-oppr 20236 |
This theorem is referenced by: opprsubrng 20459 |
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