Proof of Theorem crngpropd
Step | Hyp | Ref
| Expression |
1 | | ringpropd.1 |
. . . . . 6
⊢ (𝜑 → 𝐵 = (Base‘𝐾)) |
2 | | eqid 2175 |
. . . . . . 7
⊢
(mulGrp‘𝐾) =
(mulGrp‘𝐾) |
3 | | eqid 2175 |
. . . . . . 7
⊢
(Base‘𝐾) =
(Base‘𝐾) |
4 | 2, 3 | mgpbasg 12930 |
. . . . . 6
⊢ (𝐾 ∈ Ring →
(Base‘𝐾) =
(Base‘(mulGrp‘𝐾))) |
5 | 1, 4 | sylan9eq 2228 |
. . . . 5
⊢ ((𝜑 ∧ 𝐾 ∈ Ring) → 𝐵 = (Base‘(mulGrp‘𝐾))) |
6 | | ringpropd.2 |
. . . . . . 7
⊢ (𝜑 → 𝐵 = (Base‘𝐿)) |
7 | 6 | adantr 276 |
. . . . . 6
⊢ ((𝜑 ∧ 𝐾 ∈ Ring) → 𝐵 = (Base‘𝐿)) |
8 | | ringpropd.3 |
. . . . . . . . 9
⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(+g‘𝐾)𝑦) = (𝑥(+g‘𝐿)𝑦)) |
9 | | ringpropd.4 |
. . . . . . . . 9
⊢ ((𝜑 ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(.r‘𝐾)𝑦) = (𝑥(.r‘𝐿)𝑦)) |
10 | 1, 6, 8, 9 | ringpropd 13009 |
. . . . . . . 8
⊢ (𝜑 → (𝐾 ∈ Ring ↔ 𝐿 ∈ Ring)) |
11 | 10 | biimpa 296 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝐾 ∈ Ring) → 𝐿 ∈ Ring) |
12 | | eqid 2175 |
. . . . . . . 8
⊢
(mulGrp‘𝐿) =
(mulGrp‘𝐿) |
13 | | eqid 2175 |
. . . . . . . 8
⊢
(Base‘𝐿) =
(Base‘𝐿) |
14 | 12, 13 | mgpbasg 12930 |
. . . . . . 7
⊢ (𝐿 ∈ Ring →
(Base‘𝐿) =
(Base‘(mulGrp‘𝐿))) |
15 | 11, 14 | syl 14 |
. . . . . 6
⊢ ((𝜑 ∧ 𝐾 ∈ Ring) → (Base‘𝐿) =
(Base‘(mulGrp‘𝐿))) |
16 | 7, 15 | eqtrd 2208 |
. . . . 5
⊢ ((𝜑 ∧ 𝐾 ∈ Ring) → 𝐵 = (Base‘(mulGrp‘𝐿))) |
17 | 9 | adantlr 477 |
. . . . . 6
⊢ (((𝜑 ∧ 𝐾 ∈ Ring) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(.r‘𝐾)𝑦) = (𝑥(.r‘𝐿)𝑦)) |
18 | | eqid 2175 |
. . . . . . . . 9
⊢
(.r‘𝐾) = (.r‘𝐾) |
19 | 2, 18 | mgpplusgg 12929 |
. . . . . . . 8
⊢ (𝐾 ∈ Ring →
(.r‘𝐾) =
(+g‘(mulGrp‘𝐾))) |
20 | 19 | adantl 277 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝐾 ∈ Ring) →
(.r‘𝐾) =
(+g‘(mulGrp‘𝐾))) |
21 | 20 | oveqdr 5893 |
. . . . . 6
⊢ (((𝜑 ∧ 𝐾 ∈ Ring) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(.r‘𝐾)𝑦) = (𝑥(+g‘(mulGrp‘𝐾))𝑦)) |
22 | | eqid 2175 |
. . . . . . . . 9
⊢
(.r‘𝐿) = (.r‘𝐿) |
23 | 12, 22 | mgpplusgg 12929 |
. . . . . . . 8
⊢ (𝐿 ∈ Ring →
(.r‘𝐿) =
(+g‘(mulGrp‘𝐿))) |
24 | 11, 23 | syl 14 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝐾 ∈ Ring) →
(.r‘𝐿) =
(+g‘(mulGrp‘𝐿))) |
25 | 24 | oveqdr 5893 |
. . . . . 6
⊢ (((𝜑 ∧ 𝐾 ∈ Ring) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(.r‘𝐿)𝑦) = (𝑥(+g‘(mulGrp‘𝐿))𝑦)) |
26 | 17, 21, 25 | 3eqtr3d 2216 |
. . . . 5
⊢ (((𝜑 ∧ 𝐾 ∈ Ring) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(+g‘(mulGrp‘𝐾))𝑦) = (𝑥(+g‘(mulGrp‘𝐿))𝑦)) |
27 | 5, 16, 26 | cmnpropd 12894 |
. . . 4
⊢ ((𝜑 ∧ 𝐾 ∈ Ring) → ((mulGrp‘𝐾) ∈ CMnd ↔
(mulGrp‘𝐿) ∈
CMnd)) |
28 | 27 | pm5.32da 452 |
. . 3
⊢ (𝜑 → ((𝐾 ∈ Ring ∧ (mulGrp‘𝐾) ∈ CMnd) ↔ (𝐾 ∈ Ring ∧
(mulGrp‘𝐿) ∈
CMnd))) |
29 | 10 | anbi1d 465 |
. . 3
⊢ (𝜑 → ((𝐾 ∈ Ring ∧ (mulGrp‘𝐿) ∈ CMnd) ↔ (𝐿 ∈ Ring ∧
(mulGrp‘𝐿) ∈
CMnd))) |
30 | 28, 29 | bitrd 188 |
. 2
⊢ (𝜑 → ((𝐾 ∈ Ring ∧ (mulGrp‘𝐾) ∈ CMnd) ↔ (𝐿 ∈ Ring ∧
(mulGrp‘𝐿) ∈
CMnd))) |
31 | 2 | iscrng 12979 |
. 2
⊢ (𝐾 ∈ CRing ↔ (𝐾 ∈ Ring ∧
(mulGrp‘𝐾) ∈
CMnd)) |
32 | 12 | iscrng 12979 |
. 2
⊢ (𝐿 ∈ CRing ↔ (𝐿 ∈ Ring ∧
(mulGrp‘𝐿) ∈
CMnd)) |
33 | 30, 31, 32 | 3bitr4g 223 |
1
⊢ (𝜑 → (𝐾 ∈ CRing ↔ 𝐿 ∈ CRing)) |