Proof of Theorem nnmaxpwlemxy
| Step | Hyp | Ref
| Expression |
| 1 | | nnmaxpwlemxy.b |
. . . . . 6
⊢ (𝜑 → 𝐵 ∈
(ℤ≥‘2)) |
| 2 | | eluz2nn 9975 |
. . . . . 6
⊢ (𝐵 ∈
(ℤ≥‘2) → 𝐵 ∈ ℕ) |
| 3 | 1, 2 | syl 14 |
. . . . 5
⊢ (𝜑 → 𝐵 ∈ ℕ) |
| 4 | | nnmaxpwlemxy.x |
. . . . . . . . 9
⊢ (𝜑 → 𝑋 ∈ ℕ) |
| 5 | 4 | nnzd 9771 |
. . . . . . . 8
⊢ (𝜑 → 𝑋 ∈ ℤ) |
| 6 | | nnmaxpwlemxy.y |
. . . . . . . . . 10
⊢ (𝜑 → 𝑌 ∈
ℕ0) |
| 7 | 3, 6 | nnexpcld 11146 |
. . . . . . . . 9
⊢ (𝜑 → (𝐵↑𝑌) ∈ ℕ) |
| 8 | 7 | nnzd 9771 |
. . . . . . . 8
⊢ (𝜑 → (𝐵↑𝑌) ∈ ℤ) |
| 9 | | nnmaxpwlemxy.ayx |
. . . . . . . . . 10
⊢ (𝜑 → 𝐴 = ((𝐵↑𝑌) · 𝑋)) |
| 10 | 7, 4 | nnmulcld 9355 |
. . . . . . . . . 10
⊢ (𝜑 → ((𝐵↑𝑌) · 𝑋) ∈ ℕ) |
| 11 | 9, 10 | eqeltrd 2315 |
. . . . . . . . 9
⊢ (𝜑 → 𝐴 ∈ ℕ) |
| 12 | 11 | nnzd 9771 |
. . . . . . . 8
⊢ (𝜑 → 𝐴 ∈ ℤ) |
| 13 | 7 | nncnd 9320 |
. . . . . . . . . 10
⊢ (𝜑 → (𝐵↑𝑌) ∈ ℂ) |
| 14 | 4 | nncnd 9320 |
. . . . . . . . . 10
⊢ (𝜑 → 𝑋 ∈ ℂ) |
| 15 | 13, 14 | mulcomd 8347 |
. . . . . . . . 9
⊢ (𝜑 → ((𝐵↑𝑌) · 𝑋) = (𝑋 · (𝐵↑𝑌))) |
| 16 | 9, 15 | eqtr2d 2272 |
. . . . . . . 8
⊢ (𝜑 → (𝑋 · (𝐵↑𝑌)) = 𝐴) |
| 17 | | dvds0lem 12584 |
. . . . . . . 8
⊢ (((𝑋 ∈ ℤ ∧ (𝐵↑𝑌) ∈ ℤ ∧ 𝐴 ∈ ℤ) ∧ (𝑋 · (𝐵↑𝑌)) = 𝐴) → (𝐵↑𝑌) ∥ 𝐴) |
| 18 | 5, 8, 12, 16, 17 | syl31anc 1281 |
. . . . . . 7
⊢ (𝜑 → (𝐵↑𝑌) ∥ 𝐴) |
| 19 | | nnmaxpwlemxy.bx |
. . . . . . . . 9
⊢ (𝜑 → ¬ 𝐵 ∥ 𝑋) |
| 20 | 9 | breq2d 4142 |
. . . . . . . . . 10
⊢ (𝜑 → (((𝐵↑𝑌) · 𝐵) ∥ 𝐴 ↔ ((𝐵↑𝑌) · 𝐵) ∥ ((𝐵↑𝑌) · 𝑋))) |
| 21 | 3 | nnzd 9771 |
. . . . . . . . . . 11
⊢ (𝜑 → 𝐵 ∈ ℤ) |
| 22 | 7 | nnne0d 9351 |
. . . . . . . . . . 11
⊢ (𝜑 → (𝐵↑𝑌) ≠ 0) |
| 23 | | dvdscmulr 12603 |
. . . . . . . . . . 11
⊢ ((𝐵 ∈ ℤ ∧ 𝑋 ∈ ℤ ∧ ((𝐵↑𝑌) ∈ ℤ ∧ (𝐵↑𝑌) ≠ 0)) → (((𝐵↑𝑌) · 𝐵) ∥ ((𝐵↑𝑌) · 𝑋) ↔ 𝐵 ∥ 𝑋)) |
| 24 | 21, 5, 8, 22, 23 | syl112anc 1282 |
. . . . . . . . . 10
⊢ (𝜑 → (((𝐵↑𝑌) · 𝐵) ∥ ((𝐵↑𝑌) · 𝑋) ↔ 𝐵 ∥ 𝑋)) |
| 25 | 20, 24 | bitrd 188 |
. . . . . . . . 9
⊢ (𝜑 → (((𝐵↑𝑌) · 𝐵) ∥ 𝐴 ↔ 𝐵 ∥ 𝑋)) |
| 26 | 19, 25 | mtbird 684 |
. . . . . . . 8
⊢ (𝜑 → ¬ ((𝐵↑𝑌) · 𝐵) ∥ 𝐴) |
| 27 | 3 | nncnd 9320 |
. . . . . . . . . 10
⊢ (𝜑 → 𝐵 ∈ ℂ) |
| 28 | 27, 6 | expp1d 11125 |
. . . . . . . . 9
⊢ (𝜑 → (𝐵↑(𝑌 + 1)) = ((𝐵↑𝑌) · 𝐵)) |
| 29 | 28 | breq1d 4140 |
. . . . . . . 8
⊢ (𝜑 → ((𝐵↑(𝑌 + 1)) ∥ 𝐴 ↔ ((𝐵↑𝑌) · 𝐵) ∥ 𝐴)) |
| 30 | 26, 29 | mtbird 684 |
. . . . . . 7
⊢ (𝜑 → ¬ (𝐵↑(𝑌 + 1)) ∥ 𝐴) |
| 31 | | pwbdvdseu 12963 |
. . . . . . . . 9
⊢ ((𝐴 ∈ ℕ ∧ 𝐵 ∈
(ℤ≥‘2)) → ∃!𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)) |
| 32 | 11, 1, 31 | syl2anc 415 |
. . . . . . . 8
⊢ (𝜑 → ∃!𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)) |
| 33 | | oveq2 6093 |
. . . . . . . . . . 11
⊢ (𝑧 = 𝑌 → (𝐵↑𝑧) = (𝐵↑𝑌)) |
| 34 | 33 | breq1d 4140 |
. . . . . . . . . 10
⊢ (𝑧 = 𝑌 → ((𝐵↑𝑧) ∥ 𝐴 ↔ (𝐵↑𝑌) ∥ 𝐴)) |
| 35 | | oveq1 6092 |
. . . . . . . . . . . . 13
⊢ (𝑧 = 𝑌 → (𝑧 + 1) = (𝑌 + 1)) |
| 36 | 35 | oveq2d 6101 |
. . . . . . . . . . . 12
⊢ (𝑧 = 𝑌 → (𝐵↑(𝑧 + 1)) = (𝐵↑(𝑌 + 1))) |
| 37 | 36 | breq1d 4140 |
. . . . . . . . . . 11
⊢ (𝑧 = 𝑌 → ((𝐵↑(𝑧 + 1)) ∥ 𝐴 ↔ (𝐵↑(𝑌 + 1)) ∥ 𝐴)) |
| 38 | 37 | notbid 677 |
. . . . . . . . . 10
⊢ (𝑧 = 𝑌 → (¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴 ↔ ¬ (𝐵↑(𝑌 + 1)) ∥ 𝐴)) |
| 39 | 34, 38 | anbi12d 477 |
. . . . . . . . 9
⊢ (𝑧 = 𝑌 → (((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴) ↔ ((𝐵↑𝑌) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑌 + 1)) ∥ 𝐴))) |
| 40 | 39 | riota2 6062 |
. . . . . . . 8
⊢ ((𝑌 ∈ ℕ0
∧ ∃!𝑧 ∈
ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)) → (((𝐵↑𝑌) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑌 + 1)) ∥ 𝐴) ↔ (℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)) = 𝑌)) |
| 41 | 6, 32, 40 | syl2anc 415 |
. . . . . . 7
⊢ (𝜑 → (((𝐵↑𝑌) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑌 + 1)) ∥ 𝐴) ↔ (℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)) = 𝑌)) |
| 42 | 18, 30, 41 | mpbi2and 956 |
. . . . . 6
⊢ (𝜑 → (℩𝑧 ∈ ℕ0
((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)) = 𝑌) |
| 43 | 42, 6 | eqeltrd 2315 |
. . . . 5
⊢ (𝜑 → (℩𝑧 ∈ ℕ0
((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)) ∈
ℕ0) |
| 44 | 3, 43 | nnexpcld 11146 |
. . . 4
⊢ (𝜑 → (𝐵↑(℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴))) ∈ ℕ) |
| 45 | 44 | nncnd 9320 |
. . 3
⊢ (𝜑 → (𝐵↑(℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴))) ∈ ℂ) |
| 46 | 44 | nnap0d 9352 |
. . 3
⊢ (𝜑 → (𝐵↑(℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴))) # 0) |
| 47 | 42 | eqcomd 2244 |
. . . . . 6
⊢ (𝜑 → 𝑌 = (℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴))) |
| 48 | 47 | oveq2d 6101 |
. . . . 5
⊢ (𝜑 → (𝐵↑𝑌) = (𝐵↑(℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)))) |
| 49 | 48 | oveq1d 6100 |
. . . 4
⊢ (𝜑 → ((𝐵↑𝑌) · 𝑋) = ((𝐵↑(℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴))) · 𝑋)) |
| 50 | 9, 49 | eqtr2d 2272 |
. . 3
⊢ (𝜑 → ((𝐵↑(℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴))) · 𝑋) = 𝐴) |
| 51 | 45, 14, 46, 50 | mvllmulapd 9174 |
. 2
⊢ (𝜑 → 𝑋 = (𝐴 / (𝐵↑(℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴))))) |
| 52 | 51, 47 | jca 306 |
1
⊢ (𝜑 → (𝑋 = (𝐴 / (𝐵↑(℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)))) ∧ 𝑌 = (℩𝑧 ∈ ℕ0 ((𝐵↑𝑧) ∥ 𝐴 ∧ ¬ (𝐵↑(𝑧 + 1)) ∥ 𝐴)))) |