| Step | Hyp | Ref
| Expression |
| 1 | | eluz2nn 9640 |
. . . . 5
⊢ (𝐵 ∈
(ℤ≥‘2) → 𝐵 ∈ ℕ) |
| 2 | 1 | nnrpd 9769 |
. . . 4
⊢ (𝐵 ∈
(ℤ≥‘2) → 𝐵 ∈
ℝ+) |
| 3 | 2 | 3ad2ant2 1021 |
. . 3
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2)
∧ (𝑋 gcd 𝐵) = 1) → 𝐵 ∈
ℝ+) |
| 4 | | 1red 8041 |
. . . . 5
⊢ (𝐵 ∈
(ℤ≥‘2) → 1 ∈ ℝ) |
| 5 | | eluzelre 9611 |
. . . . 5
⊢ (𝐵 ∈
(ℤ≥‘2) → 𝐵 ∈ ℝ) |
| 6 | | eluz2gt1 9676 |
. . . . 5
⊢ (𝐵 ∈
(ℤ≥‘2) → 1 < 𝐵) |
| 7 | 4, 5, 6 | gtapd 8664 |
. . . 4
⊢ (𝐵 ∈
(ℤ≥‘2) → 𝐵 # 1) |
| 8 | 7 | 3ad2ant2 1021 |
. . 3
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2)
∧ (𝑋 gcd 𝐵) = 1) → 𝐵 # 1) |
| 9 | | eluz2nn 9640 |
. . . . 5
⊢ (𝑋 ∈
(ℤ≥‘2) → 𝑋 ∈ ℕ) |
| 10 | 9 | nnrpd 9769 |
. . . 4
⊢ (𝑋 ∈
(ℤ≥‘2) → 𝑋 ∈
ℝ+) |
| 11 | 10 | 3ad2ant1 1020 |
. . 3
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2)
∧ (𝑋 gcd 𝐵) = 1) → 𝑋 ∈
ℝ+) |
| 12 | | rplogbcl 15182 |
. . 3
⊢ ((𝐵 ∈ ℝ+
∧ 𝐵 # 1 ∧ 𝑋 ∈ ℝ+)
→ (𝐵 logb
𝑋) ∈
ℝ) |
| 13 | 3, 8, 11, 12 | syl3anc 1249 |
. 2
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2)
∧ (𝑋 gcd 𝐵) = 1) → (𝐵 logb 𝑋) ∈ ℝ) |
| 14 | | eluz2gt1 9676 |
. . . . . . . . . 10
⊢ (𝑋 ∈
(ℤ≥‘2) → 1 < 𝑋) |
| 15 | 14 | adantr 276 |
. . . . . . . . 9
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ 1 < 𝑋) |
| 16 | 9 | adantr 276 |
. . . . . . . . . . 11
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ 𝑋 ∈
ℕ) |
| 17 | 16 | nnrpd 9769 |
. . . . . . . . . 10
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ 𝑋 ∈
ℝ+) |
| 18 | 1 | adantl 277 |
. . . . . . . . . . 11
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ 𝐵 ∈
ℕ) |
| 19 | 18 | nnrpd 9769 |
. . . . . . . . . 10
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ 𝐵 ∈
ℝ+) |
| 20 | 6 | adantl 277 |
. . . . . . . . . 10
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ 1 < 𝐵) |
| 21 | | logbgt0b 15202 |
. . . . . . . . . 10
⊢ ((𝑋 ∈ ℝ+
∧ (𝐵 ∈
ℝ+ ∧ 1 < 𝐵)) → (0 < (𝐵 logb 𝑋) ↔ 1 < 𝑋)) |
| 22 | 17, 19, 20, 21 | syl12anc 1247 |
. . . . . . . . 9
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ (0 < (𝐵
logb 𝑋) ↔ 1
< 𝑋)) |
| 23 | 15, 22 | mpbird 167 |
. . . . . . . 8
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ 0 < (𝐵
logb 𝑋)) |
| 24 | 23 | anim1ci 341 |
. . . . . . 7
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝐵 logb
𝑋) ∈ ℚ) →
((𝐵 logb 𝑋) ∈ ℚ ∧ 0 <
(𝐵 logb 𝑋))) |
| 25 | | elpq 9723 |
. . . . . . 7
⊢ (((𝐵 logb 𝑋) ∈ ℚ ∧ 0 <
(𝐵 logb 𝑋)) → ∃𝑚 ∈ ℕ ∃𝑛 ∈ ℕ (𝐵 logb 𝑋) = (𝑚 / 𝑛)) |
| 26 | 24, 25 | syl 14 |
. . . . . 6
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝐵 logb
𝑋) ∈ ℚ) →
∃𝑚 ∈ ℕ
∃𝑛 ∈ ℕ
(𝐵 logb 𝑋) = (𝑚 / 𝑛)) |
| 27 | 26 | ex 115 |
. . . . 5
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ ((𝐵 logb
𝑋) ∈ ℚ →
∃𝑚 ∈ ℕ
∃𝑛 ∈ ℕ
(𝐵 logb 𝑋) = (𝑚 / 𝑛))) |
| 28 | | oveq2 5930 |
. . . . . . . . . 10
⊢ ((𝑚 / 𝑛) = (𝐵 logb 𝑋) → (𝐵↑𝑐(𝑚 / 𝑛)) = (𝐵↑𝑐(𝐵 logb 𝑋))) |
| 29 | 28 | eqcoms 2199 |
. . . . . . . . 9
⊢ ((𝐵 logb 𝑋) = (𝑚 / 𝑛) → (𝐵↑𝑐(𝑚 / 𝑛)) = (𝐵↑𝑐(𝐵 logb 𝑋))) |
| 30 | 7 | adantl 277 |
. . . . . . . . . . 11
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ 𝐵 #
1) |
| 31 | | rpcxplogb 15200 |
. . . . . . . . . . 11
⊢ ((𝐵 ∈ ℝ+
∧ 𝐵 # 1 ∧ 𝑋 ∈ ℝ+)
→ (𝐵↑𝑐(𝐵 logb 𝑋)) = 𝑋) |
| 32 | 19, 30, 17, 31 | syl3anc 1249 |
. . . . . . . . . 10
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ (𝐵↑𝑐(𝐵 logb 𝑋)) = 𝑋) |
| 33 | 32 | adantr 276 |
. . . . . . . . 9
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (𝐵↑𝑐(𝐵 logb 𝑋)) = 𝑋) |
| 34 | 29, 33 | sylan9eqr 2251 |
. . . . . . . 8
⊢ ((((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
∧ (𝐵 logb
𝑋) = (𝑚 / 𝑛)) → (𝐵↑𝑐(𝑚 / 𝑛)) = 𝑋) |
| 35 | 34 | ex 115 |
. . . . . . 7
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝐵 logb
𝑋) = (𝑚 / 𝑛) → (𝐵↑𝑐(𝑚 / 𝑛)) = 𝑋)) |
| 36 | | oveq1 5929 |
. . . . . . . 8
⊢ ((𝐵↑𝑐(𝑚 / 𝑛)) = 𝑋 → ((𝐵↑𝑐(𝑚 / 𝑛))↑𝑛) = (𝑋↑𝑛)) |
| 37 | 19 | adantr 276 |
. . . . . . . . . . . 12
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ 𝐵 ∈
ℝ+) |
| 38 | | nnrp 9738 |
. . . . . . . . . . . . . . 15
⊢ (𝑚 ∈ ℕ → 𝑚 ∈
ℝ+) |
| 39 | 38 | ad2antrl 490 |
. . . . . . . . . . . . . 14
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ 𝑚 ∈
ℝ+) |
| 40 | | nnrp 9738 |
. . . . . . . . . . . . . . 15
⊢ (𝑛 ∈ ℕ → 𝑛 ∈
ℝ+) |
| 41 | 40 | ad2antll 491 |
. . . . . . . . . . . . . 14
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ 𝑛 ∈
ℝ+) |
| 42 | 39, 41 | rpdivcld 9789 |
. . . . . . . . . . . . 13
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (𝑚 / 𝑛) ∈
ℝ+) |
| 43 | 42 | rpred 9771 |
. . . . . . . . . . . 12
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (𝑚 / 𝑛) ∈
ℝ) |
| 44 | | nncn 8998 |
. . . . . . . . . . . . 13
⊢ (𝑛 ∈ ℕ → 𝑛 ∈
ℂ) |
| 45 | 44 | ad2antll 491 |
. . . . . . . . . . . 12
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ 𝑛 ∈
ℂ) |
| 46 | 37, 43, 45 | cxpmuld 15173 |
. . . . . . . . . . 11
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (𝐵↑𝑐((𝑚 / 𝑛) · 𝑛)) = ((𝐵↑𝑐(𝑚 / 𝑛))↑𝑐𝑛)) |
| 47 | 39 | rpcnd 9773 |
. . . . . . . . . . . . . 14
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ 𝑚 ∈
ℂ) |
| 48 | 41 | rpap0d 9777 |
. . . . . . . . . . . . . 14
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ 𝑛 #
0) |
| 49 | 47, 45, 48 | divcanap1d 8818 |
. . . . . . . . . . . . 13
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝑚 / 𝑛) · 𝑛) = 𝑚) |
| 50 | 49 | oveq2d 5938 |
. . . . . . . . . . . 12
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (𝐵↑𝑐((𝑚 / 𝑛) · 𝑛)) = (𝐵↑𝑐𝑚)) |
| 51 | 1 | ad2antlr 489 |
. . . . . . . . . . . . 13
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ 𝐵 ∈
ℕ) |
| 52 | | nnz 9345 |
. . . . . . . . . . . . . 14
⊢ (𝑚 ∈ ℕ → 𝑚 ∈
ℤ) |
| 53 | 52 | ad2antrl 490 |
. . . . . . . . . . . . 13
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ 𝑚 ∈
ℤ) |
| 54 | | cxpexpnn 15132 |
. . . . . . . . . . . . 13
⊢ ((𝐵 ∈ ℕ ∧ 𝑚 ∈ ℤ) → (𝐵↑𝑐𝑚) = (𝐵↑𝑚)) |
| 55 | 51, 53, 54 | syl2anc 411 |
. . . . . . . . . . . 12
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (𝐵↑𝑐𝑚) = (𝐵↑𝑚)) |
| 56 | 50, 55 | eqtrd 2229 |
. . . . . . . . . . 11
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (𝐵↑𝑐((𝑚 / 𝑛) · 𝑛)) = (𝐵↑𝑚)) |
| 57 | 37, 43 | rpcxpcld 15169 |
. . . . . . . . . . . 12
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (𝐵↑𝑐(𝑚 / 𝑛)) ∈
ℝ+) |
| 58 | | nnz 9345 |
. . . . . . . . . . . . 13
⊢ (𝑛 ∈ ℕ → 𝑛 ∈
ℤ) |
| 59 | 58 | ad2antll 491 |
. . . . . . . . . . . 12
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ 𝑛 ∈
ℤ) |
| 60 | | cxpexprp 15131 |
. . . . . . . . . . . 12
⊢ (((𝐵↑𝑐(𝑚 / 𝑛)) ∈ ℝ+ ∧ 𝑛 ∈ ℤ) → ((𝐵↑𝑐(𝑚 / 𝑛))↑𝑐𝑛) = ((𝐵↑𝑐(𝑚 / 𝑛))↑𝑛)) |
| 61 | 57, 59, 60 | syl2anc 411 |
. . . . . . . . . . 11
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝐵↑𝑐(𝑚 / 𝑛))↑𝑐𝑛) = ((𝐵↑𝑐(𝑚 / 𝑛))↑𝑛)) |
| 62 | 46, 56, 61 | 3eqtr3rd 2238 |
. . . . . . . . . 10
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝐵↑𝑐(𝑚 / 𝑛))↑𝑛) = (𝐵↑𝑚)) |
| 63 | 62 | eqeq1d 2205 |
. . . . . . . . 9
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (((𝐵↑𝑐(𝑚 / 𝑛))↑𝑛) = (𝑋↑𝑛) ↔ (𝐵↑𝑚) = (𝑋↑𝑛))) |
| 64 | | simpr 110 |
. . . . . . . . . . . . 13
⊢ ((𝑚 ∈ ℕ ∧ 𝑛 ∈ ℕ) → 𝑛 ∈
ℕ) |
| 65 | | rplpwr 12194 |
. . . . . . . . . . . . 13
⊢ ((𝑋 ∈ ℕ ∧ 𝐵 ∈ ℕ ∧ 𝑛 ∈ ℕ) → ((𝑋 gcd 𝐵) = 1 → ((𝑋↑𝑛) gcd 𝐵) = 1)) |
| 66 | 16, 18, 64, 65 | syl2an3an 1309 |
. . . . . . . . . . . 12
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝑋 gcd 𝐵) = 1 → ((𝑋↑𝑛) gcd 𝐵) = 1)) |
| 67 | | oveq1 5929 |
. . . . . . . . . . . . . . . . . 18
⊢ ((𝑋↑𝑛) = (𝐵↑𝑚) → ((𝑋↑𝑛) gcd 𝐵) = ((𝐵↑𝑚) gcd 𝐵)) |
| 68 | 67 | eqeq1d 2205 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝑋↑𝑛) = (𝐵↑𝑚) → (((𝑋↑𝑛) gcd 𝐵) = 1 ↔ ((𝐵↑𝑚) gcd 𝐵) = 1)) |
| 69 | 68 | eqcoms 2199 |
. . . . . . . . . . . . . . . 16
⊢ ((𝐵↑𝑚) = (𝑋↑𝑛) → (((𝑋↑𝑛) gcd 𝐵) = 1 ↔ ((𝐵↑𝑚) gcd 𝐵) = 1)) |
| 70 | 69 | adantl 277 |
. . . . . . . . . . . . . . 15
⊢ ((((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
∧ (𝐵↑𝑚) = (𝑋↑𝑛)) → (((𝑋↑𝑛) gcd 𝐵) = 1 ↔ ((𝐵↑𝑚) gcd 𝐵) = 1)) |
| 71 | | eluzelz 9610 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝐵 ∈
(ℤ≥‘2) → 𝐵 ∈ ℤ) |
| 72 | 71 | adantl 277 |
. . . . . . . . . . . . . . . . . 18
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ 𝐵 ∈
ℤ) |
| 73 | | simpl 109 |
. . . . . . . . . . . . . . . . . 18
⊢ ((𝑚 ∈ ℕ ∧ 𝑛 ∈ ℕ) → 𝑚 ∈
ℕ) |
| 74 | | rpexp 12321 |
. . . . . . . . . . . . . . . . . 18
⊢ ((𝐵 ∈ ℤ ∧ 𝐵 ∈ ℤ ∧ 𝑚 ∈ ℕ) → (((𝐵↑𝑚) gcd 𝐵) = 1 ↔ (𝐵 gcd 𝐵) = 1)) |
| 75 | 72, 72, 73, 74 | syl2an3an 1309 |
. . . . . . . . . . . . . . . . 17
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (((𝐵↑𝑚) gcd 𝐵) = 1 ↔ (𝐵 gcd 𝐵) = 1)) |
| 76 | | gcdid 12153 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝐵 ∈ ℤ → (𝐵 gcd 𝐵) = (abs‘𝐵)) |
| 77 | 71, 76 | syl 14 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝐵 ∈
(ℤ≥‘2) → (𝐵 gcd 𝐵) = (abs‘𝐵)) |
| 78 | | nnnn0 9256 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝐵 ∈ ℕ → 𝐵 ∈
ℕ0) |
| 79 | | nn0ge0 9274 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝐵 ∈ ℕ0
→ 0 ≤ 𝐵) |
| 80 | 1, 78, 79 | 3syl 17 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝐵 ∈
(ℤ≥‘2) → 0 ≤ 𝐵) |
| 81 | 5, 80 | absidd 11332 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝐵 ∈
(ℤ≥‘2) → (abs‘𝐵) = 𝐵) |
| 82 | 77, 81 | eqtrd 2229 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝐵 ∈
(ℤ≥‘2) → (𝐵 gcd 𝐵) = 𝐵) |
| 83 | 82 | eqeq1d 2205 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝐵 ∈
(ℤ≥‘2) → ((𝐵 gcd 𝐵) = 1 ↔ 𝐵 = 1)) |
| 84 | 83 | ad2antlr 489 |
. . . . . . . . . . . . . . . . . 18
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝐵 gcd 𝐵) = 1 ↔ 𝐵 = 1)) |
| 85 | 4, 6 | gtned 8139 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝐵 ∈
(ℤ≥‘2) → 𝐵 ≠ 1) |
| 86 | | eqneqall 2377 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝐵 = 1 → (𝐵 ≠ 1 → ⊥)) |
| 87 | 85, 86 | syl5com 29 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝐵 ∈
(ℤ≥‘2) → (𝐵 = 1 → ⊥)) |
| 88 | 87 | ad2antlr 489 |
. . . . . . . . . . . . . . . . . 18
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (𝐵 = 1 →
⊥)) |
| 89 | 84, 88 | sylbid 150 |
. . . . . . . . . . . . . . . . 17
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝐵 gcd 𝐵) = 1 →
⊥)) |
| 90 | 75, 89 | sylbid 150 |
. . . . . . . . . . . . . . . 16
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (((𝐵↑𝑚) gcd 𝐵) = 1 → ⊥)) |
| 91 | 90 | adantr 276 |
. . . . . . . . . . . . . . 15
⊢ ((((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
∧ (𝐵↑𝑚) = (𝑋↑𝑛)) → (((𝐵↑𝑚) gcd 𝐵) = 1 → ⊥)) |
| 92 | 70, 91 | sylbid 150 |
. . . . . . . . . . . . . 14
⊢ ((((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
∧ (𝐵↑𝑚) = (𝑋↑𝑛)) → (((𝑋↑𝑛) gcd 𝐵) = 1 → ⊥)) |
| 93 | 92 | ex 115 |
. . . . . . . . . . . . 13
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝐵↑𝑚) = (𝑋↑𝑛) → (((𝑋↑𝑛) gcd 𝐵) = 1 → ⊥))) |
| 94 | 93 | com23 78 |
. . . . . . . . . . . 12
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (((𝑋↑𝑛) gcd 𝐵) = 1 → ((𝐵↑𝑚) = (𝑋↑𝑛) → ⊥))) |
| 95 | 66, 94 | syld 45 |
. . . . . . . . . . 11
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝑋 gcd 𝐵) = 1 → ((𝐵↑𝑚) = (𝑋↑𝑛) → ⊥))) |
| 96 | | dfnot 1382 |
. . . . . . . . . . 11
⊢ (¬
(𝐵↑𝑚) = (𝑋↑𝑛) ↔ ((𝐵↑𝑚) = (𝑋↑𝑛) → ⊥)) |
| 97 | 95, 96 | imbitrrdi 162 |
. . . . . . . . . 10
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝑋 gcd 𝐵) = 1 → ¬ (𝐵↑𝑚) = (𝑋↑𝑛))) |
| 98 | 97 | con2d 625 |
. . . . . . . . 9
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝐵↑𝑚) = (𝑋↑𝑛) → ¬ (𝑋 gcd 𝐵) = 1)) |
| 99 | 63, 98 | sylbid 150 |
. . . . . . . 8
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ (((𝐵↑𝑐(𝑚 / 𝑛))↑𝑛) = (𝑋↑𝑛) → ¬ (𝑋 gcd 𝐵) = 1)) |
| 100 | 36, 99 | syl5 32 |
. . . . . . 7
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝐵↑𝑐(𝑚 / 𝑛)) = 𝑋 → ¬ (𝑋 gcd 𝐵) = 1)) |
| 101 | 35, 100 | syld 45 |
. . . . . 6
⊢ (((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
∧ (𝑚 ∈ ℕ
∧ 𝑛 ∈ ℕ))
→ ((𝐵 logb
𝑋) = (𝑚 / 𝑛) → ¬ (𝑋 gcd 𝐵) = 1)) |
| 102 | 101 | rexlimdvva 2622 |
. . . . 5
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ (∃𝑚 ∈
ℕ ∃𝑛 ∈
ℕ (𝐵 logb
𝑋) = (𝑚 / 𝑛) → ¬ (𝑋 gcd 𝐵) = 1)) |
| 103 | 27, 102 | syld 45 |
. . . 4
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ ((𝐵 logb
𝑋) ∈ ℚ →
¬ (𝑋 gcd 𝐵) = 1)) |
| 104 | 103 | con2d 625 |
. . 3
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2))
→ ((𝑋 gcd 𝐵) = 1 → ¬ (𝐵 logb 𝑋) ∈
ℚ)) |
| 105 | 104 | 3impia 1202 |
. 2
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2)
∧ (𝑋 gcd 𝐵) = 1) → ¬ (𝐵 logb 𝑋) ∈
ℚ) |
| 106 | 13, 105 | eldifd 3167 |
1
⊢ ((𝑋 ∈
(ℤ≥‘2) ∧ 𝐵 ∈ (ℤ≥‘2)
∧ (𝑋 gcd 𝐵) = 1) → (𝐵 logb 𝑋) ∈ (ℝ ∖
ℚ)) |