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Mirrors > Home > MPE Home > Th. List > opprmulfval | Structured version Visualization version GIF version |
Description: Value of the multiplication operation of an opposite ring. (Contributed by Mario Carneiro, 1-Dec-2014.) |
Ref | Expression |
---|---|
opprval.1 | ⊢ 𝐵 = (Base‘𝑅) |
opprval.2 | ⊢ · = (.r‘𝑅) |
opprval.3 | ⊢ 𝑂 = (oppr‘𝑅) |
opprmulfval.4 | ⊢ ∙ = (.r‘𝑂) |
Ref | Expression |
---|---|
opprmulfval | ⊢ ∙ = tpos · |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opprmulfval.4 | . 2 ⊢ ∙ = (.r‘𝑂) | |
2 | opprval.2 | . . . . . . 7 ⊢ · = (.r‘𝑅) | |
3 | 2 | fvexi 6686 | . . . . . 6 ⊢ · ∈ V |
4 | 3 | tposex 7928 | . . . . 5 ⊢ tpos · ∈ V |
5 | mulrid 16618 | . . . . . 6 ⊢ .r = Slot (.r‘ndx) | |
6 | 5 | setsid 16540 | . . . . 5 ⊢ ((𝑅 ∈ V ∧ tpos · ∈ V) → tpos · = (.r‘(𝑅 sSet 〈(.r‘ndx), tpos · 〉))) |
7 | 4, 6 | mpan2 689 | . . . 4 ⊢ (𝑅 ∈ V → tpos · = (.r‘(𝑅 sSet 〈(.r‘ndx), tpos · 〉))) |
8 | opprval.1 | . . . . . 6 ⊢ 𝐵 = (Base‘𝑅) | |
9 | opprval.3 | . . . . . 6 ⊢ 𝑂 = (oppr‘𝑅) | |
10 | 8, 2, 9 | opprval 19376 | . . . . 5 ⊢ 𝑂 = (𝑅 sSet 〈(.r‘ndx), tpos · 〉) |
11 | 10 | fveq2i 6675 | . . . 4 ⊢ (.r‘𝑂) = (.r‘(𝑅 sSet 〈(.r‘ndx), tpos · 〉)) |
12 | 7, 11 | syl6reqr 2877 | . . 3 ⊢ (𝑅 ∈ V → (.r‘𝑂) = tpos · ) |
13 | tpos0 7924 | . . . . 5 ⊢ tpos ∅ = ∅ | |
14 | 5 | str0 16537 | . . . . 5 ⊢ ∅ = (.r‘∅) |
15 | 13, 14 | eqtr2i 2847 | . . . 4 ⊢ (.r‘∅) = tpos ∅ |
16 | fvprc 6665 | . . . . . 6 ⊢ (¬ 𝑅 ∈ V → (oppr‘𝑅) = ∅) | |
17 | 9, 16 | syl5eq 2870 | . . . . 5 ⊢ (¬ 𝑅 ∈ V → 𝑂 = ∅) |
18 | 17 | fveq2d 6676 | . . . 4 ⊢ (¬ 𝑅 ∈ V → (.r‘𝑂) = (.r‘∅)) |
19 | fvprc 6665 | . . . . . 6 ⊢ (¬ 𝑅 ∈ V → (.r‘𝑅) = ∅) | |
20 | 2, 19 | syl5eq 2870 | . . . . 5 ⊢ (¬ 𝑅 ∈ V → · = ∅) |
21 | 20 | tposeqd 7897 | . . . 4 ⊢ (¬ 𝑅 ∈ V → tpos · = tpos ∅) |
22 | 15, 18, 21 | 3eqtr4a 2884 | . . 3 ⊢ (¬ 𝑅 ∈ V → (.r‘𝑂) = tpos · ) |
23 | 12, 22 | pm2.61i 184 | . 2 ⊢ (.r‘𝑂) = tpos · |
24 | 1, 23 | eqtri 2846 | 1 ⊢ ∙ = tpos · |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 = wceq 1537 ∈ wcel 2114 Vcvv 3496 ∅c0 4293 〈cop 4575 ‘cfv 6357 (class class class)co 7158 tpos ctpos 7893 ndxcnx 16482 sSet csts 16483 Basecbs 16485 .rcmulr 16568 opprcoppr 19374 |
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 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-cnex 10595 ax-1cn 10597 ax-addcl 10599 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-ral 3145 df-rex 3146 df-reu 3147 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-tr 5175 df-id 5462 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-pred 6150 df-ord 6196 df-on 6197 df-lim 6198 df-suc 6199 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-ov 7161 df-oprab 7162 df-mpo 7163 df-om 7583 df-tpos 7894 df-wrecs 7949 df-recs 8010 df-rdg 8048 df-nn 11641 df-2 11703 df-3 11704 df-ndx 16488 df-slot 16489 df-sets 16492 df-mulr 16581 df-oppr 19375 |
This theorem is referenced by: opprmul 19378 |
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