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Mirrors > Home > MPE Home > Th. List > Mathboxes > crngocom | Structured version Visualization version GIF version |
Description: The multiplication operation of a commutative ring is commutative. (Contributed by Jeff Madsen, 8-Jun-2010.) |
Ref | Expression |
---|---|
crngocom.1 | ⊢ 𝐺 = (1st ‘𝑅) |
crngocom.2 | ⊢ 𝐻 = (2nd ‘𝑅) |
crngocom.3 | ⊢ 𝑋 = ran 𝐺 |
Ref | Expression |
---|---|
crngocom | ⊢ ((𝑅 ∈ CRingOps ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝐻𝐵) = (𝐵𝐻𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | crngocom.1 | . . . . 5 ⊢ 𝐺 = (1st ‘𝑅) | |
2 | crngocom.2 | . . . . 5 ⊢ 𝐻 = (2nd ‘𝑅) | |
3 | crngocom.3 | . . . . 5 ⊢ 𝑋 = ran 𝐺 | |
4 | 1, 2, 3 | iscrngo2 33796 | . . . 4 ⊢ (𝑅 ∈ CRingOps ↔ (𝑅 ∈ RingOps ∧ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ 𝑋 (𝑥𝐻𝑦) = (𝑦𝐻𝑥))) |
5 | 4 | simprbi 480 | . . 3 ⊢ (𝑅 ∈ CRingOps → ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ 𝑋 (𝑥𝐻𝑦) = (𝑦𝐻𝑥)) |
6 | oveq1 6657 | . . . . 5 ⊢ (𝑥 = 𝐴 → (𝑥𝐻𝑦) = (𝐴𝐻𝑦)) | |
7 | oveq2 6658 | . . . . 5 ⊢ (𝑥 = 𝐴 → (𝑦𝐻𝑥) = (𝑦𝐻𝐴)) | |
8 | 6, 7 | eqeq12d 2637 | . . . 4 ⊢ (𝑥 = 𝐴 → ((𝑥𝐻𝑦) = (𝑦𝐻𝑥) ↔ (𝐴𝐻𝑦) = (𝑦𝐻𝐴))) |
9 | oveq2 6658 | . . . . 5 ⊢ (𝑦 = 𝐵 → (𝐴𝐻𝑦) = (𝐴𝐻𝐵)) | |
10 | oveq1 6657 | . . . . 5 ⊢ (𝑦 = 𝐵 → (𝑦𝐻𝐴) = (𝐵𝐻𝐴)) | |
11 | 9, 10 | eqeq12d 2637 | . . . 4 ⊢ (𝑦 = 𝐵 → ((𝐴𝐻𝑦) = (𝑦𝐻𝐴) ↔ (𝐴𝐻𝐵) = (𝐵𝐻𝐴))) |
12 | 8, 11 | rspc2v 3322 | . . 3 ⊢ ((𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (∀𝑥 ∈ 𝑋 ∀𝑦 ∈ 𝑋 (𝑥𝐻𝑦) = (𝑦𝐻𝑥) → (𝐴𝐻𝐵) = (𝐵𝐻𝐴))) |
13 | 5, 12 | mpan9 486 | . 2 ⊢ ((𝑅 ∈ CRingOps ∧ (𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋)) → (𝐴𝐻𝐵) = (𝐵𝐻𝐴)) |
14 | 13 | 3impb 1260 | 1 ⊢ ((𝑅 ∈ CRingOps ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (𝐴𝐻𝐵) = (𝐵𝐻𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 384 ∧ w3a 1037 = wceq 1483 ∈ wcel 1990 ∀wral 2912 ran crn 5115 ‘cfv 5888 (class class class)co 6650 1st c1st 7166 2nd c2nd 7167 RingOpscrngo 33693 CRingOpsccring 33792 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-iota 5851 df-fun 5890 df-fv 5896 df-ov 6653 df-1st 7168 df-2nd 7169 df-rngo 33694 df-com2 33789 df-crngo 33793 |
This theorem is referenced by: crngm23 33801 crngohomfo 33805 isidlc 33814 dmncan2 33876 |
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