Proof of Theorem aprnzr
| Step | Hyp | Ref
| Expression |
| 1 | | simpl 109 |
. 2
⊢ ((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) →
𝑅 ∈
Ring) |
| 2 | | simpll 527 |
. . . . . . . 8
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ 𝑅 ∈
Ring) |
| 3 | 2 | ringgrpd 14141 |
. . . . . . 7
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ 𝑅 ∈
Grp) |
| 4 | | eqidd 2233 |
. . . . . . . . 9
⊢ (𝑅 ∈ Ring →
(Base‘𝑅) =
(Base‘𝑅)) |
| 5 | | eqidd 2233 |
. . . . . . . . 9
⊢ (𝑅 ∈ Ring →
(Unit‘𝑅) =
(Unit‘𝑅)) |
| 6 | | ringsrg 14183 |
. . . . . . . . 9
⊢ (𝑅 ∈ Ring → 𝑅 ∈ SRing) |
| 7 | | eqid 2232 |
. . . . . . . . . 10
⊢
(Unit‘𝑅) =
(Unit‘𝑅) |
| 8 | | eqid 2232 |
. . . . . . . . . 10
⊢
(1r‘𝑅) = (1r‘𝑅) |
| 9 | 7, 8 | 1unit 14244 |
. . . . . . . . 9
⊢ (𝑅 ∈ Ring →
(1r‘𝑅)
∈ (Unit‘𝑅)) |
| 10 | 4, 5, 6, 9 | unitcld 14245 |
. . . . . . . 8
⊢ (𝑅 ∈ Ring →
(1r‘𝑅)
∈ (Base‘𝑅)) |
| 11 | 10 | ad2antrr 488 |
. . . . . . 7
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (1r‘𝑅) ∈ (Base‘𝑅)) |
| 12 | | eqid 2232 |
. . . . . . . 8
⊢
(Base‘𝑅) =
(Base‘𝑅) |
| 13 | | eqid 2232 |
. . . . . . . 8
⊢
(0g‘𝑅) = (0g‘𝑅) |
| 14 | | eqid 2232 |
. . . . . . . 8
⊢
(-g‘𝑅) = (-g‘𝑅) |
| 15 | 12, 13, 14 | grpsubid 13789 |
. . . . . . 7
⊢ ((𝑅 ∈ Grp ∧
(1r‘𝑅)
∈ (Base‘𝑅))
→ ((1r‘𝑅)(-g‘𝑅)(1r‘𝑅)) = (0g‘𝑅)) |
| 16 | 3, 11, 15 | syl2anc 411 |
. . . . . 6
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ ((1r‘𝑅)(-g‘𝑅)(1r‘𝑅)) = (0g‘𝑅)) |
| 17 | | simpr 110 |
. . . . . . 7
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (1r‘𝑅) = (0g‘𝑅)) |
| 18 | 9 | ad2antrr 488 |
. . . . . . 7
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (1r‘𝑅) ∈ (Unit‘𝑅)) |
| 19 | 17, 18 | eqeltrrd 2310 |
. . . . . 6
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (0g‘𝑅) ∈ (Unit‘𝑅)) |
| 20 | 16, 19 | eqeltrd 2309 |
. . . . 5
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ ((1r‘𝑅)(-g‘𝑅)(1r‘𝑅)) ∈ (Unit‘𝑅)) |
| 21 | | eqidd 2233 |
. . . . . 6
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (Base‘𝑅) =
(Base‘𝑅)) |
| 22 | | eqidd 2233 |
. . . . . 6
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (#r‘𝑅) = (#r‘𝑅)) |
| 23 | | eqidd 2233 |
. . . . . 6
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (-g‘𝑅) = (-g‘𝑅)) |
| 24 | | eqidd 2233 |
. . . . . 6
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (Unit‘𝑅) =
(Unit‘𝑅)) |
| 25 | 21, 22, 23, 24, 2, 11, 11 | aprval 14420 |
. . . . 5
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ ((1r‘𝑅)(#r‘𝑅)(1r‘𝑅) ↔ ((1r‘𝑅)(-g‘𝑅)(1r‘𝑅)) ∈ (Unit‘𝑅))) |
| 26 | 20, 25 | mpbird 167 |
. . . 4
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (1r‘𝑅)(#r‘𝑅)(1r‘𝑅)) |
| 27 | | simplr 529 |
. . . . 5
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ (#r‘𝑅) Ap (Base‘𝑅)) |
| 28 | | papirr 7559 |
. . . . 5
⊢
(((#r‘𝑅) Ap (Base‘𝑅) ∧ (1r‘𝑅) ∈ (Base‘𝑅)) → ¬
(1r‘𝑅)(#r‘𝑅)(1r‘𝑅)) |
| 29 | 27, 11, 28 | syl2anc 411 |
. . . 4
⊢ (((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) ∧
(1r‘𝑅) =
(0g‘𝑅))
→ ¬ (1r‘𝑅)(#r‘𝑅)(1r‘𝑅)) |
| 30 | 26, 29 | pm2.65da 667 |
. . 3
⊢ ((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) →
¬ (1r‘𝑅) = (0g‘𝑅)) |
| 31 | 30 | neqned 2419 |
. 2
⊢ ((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) →
(1r‘𝑅)
≠ (0g‘𝑅)) |
| 32 | 8, 13 | isnzr 14318 |
. 2
⊢ (𝑅 ∈ NzRing ↔ (𝑅 ∈ Ring ∧
(1r‘𝑅)
≠ (0g‘𝑅))) |
| 33 | 1, 31, 32 | sylanbrc 417 |
1
⊢ ((𝑅 ∈ Ring ∧
(#r‘𝑅) Ap
(Base‘𝑅)) →
𝑅 ∈
NzRing) |