Metamath Proof Explorer


Theorem cxple2

Description: Ordering property for complex exponentiation. (Contributed by Mario Carneiro, 8-Sep-2014)

Ref Expression
Assertion cxple2 ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → A ≤ B ↔ A C ≤ B C

Proof

Step Hyp Ref Expression
1 simpl1l ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → A ∈ ℝ
2 simpr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → 0 < A
3 1 2 elrpd ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → A ∈ ℝ +
4 3 adantr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A ∧ 0 < B → A ∈ ℝ +
5 simp2l ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → B ∈ ℝ
6 5 ad2antrr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A ∧ 0 < B → B ∈ ℝ
7 simpr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A ∧ 0 < B → 0 < B
8 6 7 elrpd ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A ∧ 0 < B → B ∈ ℝ +
9 simp3 ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → C ∈ ℝ +
10 9 ad2antrr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A ∧ 0 < B → C ∈ ℝ +
11 simp3 ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → C ∈ ℝ +
12 11 rpred ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → C ∈ ℝ
13 relogcl ⊢ A ∈ ℝ + → log ⁡ A ∈ ℝ
14 13 3ad2ant1 ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → log ⁡ A ∈ ℝ
15 12 14 remulcld ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → C ⁢ log ⁡ A ∈ ℝ
16 relogcl ⊢ B ∈ ℝ + → log ⁡ B ∈ ℝ
17 16 3ad2ant2 ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → log ⁡ B ∈ ℝ
18 12 17 remulcld ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → C ⁢ log ⁡ B ∈ ℝ
19 efle ⊢ C ⁢ log ⁡ A ∈ ℝ ∧ C ⁢ log ⁡ B ∈ ℝ → C ⁢ log ⁡ A ≤ C ⁢ log ⁡ B ↔ e C ⁢ log ⁡ A ≤ e C ⁢ log ⁡ B
20 15 18 19 syl2anc ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → C ⁢ log ⁡ A ≤ C ⁢ log ⁡ B ↔ e C ⁢ log ⁡ A ≤ e C ⁢ log ⁡ B
21 efle ⊢ log ⁡ A ∈ ℝ ∧ log ⁡ B ∈ ℝ → log ⁡ A ≤ log ⁡ B ↔ e log ⁡ A ≤ e log ⁡ B
22 14 17 21 syl2anc ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → log ⁡ A ≤ log ⁡ B ↔ e log ⁡ A ≤ e log ⁡ B
23 14 17 11 lemul2d ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → log ⁡ A ≤ log ⁡ B ↔ C ⁢ log ⁡ A ≤ C ⁢ log ⁡ B
24 reeflog ⊢ A ∈ ℝ + → e log ⁡ A = A
25 24 3ad2ant1 ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → e log ⁡ A = A
26 reeflog ⊢ B ∈ ℝ + → e log ⁡ B = B
27 26 3ad2ant2 ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → e log ⁡ B = B
28 25 27 breq12d ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → e log ⁡ A ≤ e log ⁡ B ↔ A ≤ B
29 22 23 28 3bitr3rd ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → A ≤ B ↔ C ⁢ log ⁡ A ≤ C ⁢ log ⁡ B
30 rpre ⊢ A ∈ ℝ + → A ∈ ℝ
31 30 3ad2ant1 ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → A ∈ ℝ
32 31 recnd ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → A ∈ ℂ
33 rpne0 ⊢ A ∈ ℝ + → A ≠ 0
34 33 3ad2ant1 ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → A ≠ 0
35 12 recnd ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → C ∈ ℂ
36 cxpef ⊢ A ∈ ℂ ∧ A ≠ 0 ∧ C ∈ ℂ → A C = e C ⁢ log ⁡ A
37 32 34 35 36 syl3anc ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → A C = e C ⁢ log ⁡ A
38 rpre ⊢ B ∈ ℝ + → B ∈ ℝ
39 38 3ad2ant2 ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → B ∈ ℝ
40 39 recnd ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → B ∈ ℂ
41 rpne0 ⊢ B ∈ ℝ + → B ≠ 0
42 41 3ad2ant2 ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → B ≠ 0
43 cxpef ⊢ B ∈ ℂ ∧ B ≠ 0 ∧ C ∈ ℂ → B C = e C ⁢ log ⁡ B
44 40 42 35 43 syl3anc ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → B C = e C ⁢ log ⁡ B
45 37 44 breq12d ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → A C ≤ B C ↔ e C ⁢ log ⁡ A ≤ e C ⁢ log ⁡ B
46 20 29 45 3bitr4d ⊢ A ∈ ℝ + ∧ B ∈ ℝ + ∧ C ∈ ℝ + → A ≤ B ↔ A C ≤ B C
47 4 8 10 46 syl3anc ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A ∧ 0 < B → A ≤ B ↔ A C ≤ B C
48 0re ⊢ 0 ∈ ℝ
49 simp1l ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → A ∈ ℝ
50 ltnle ⊢ 0 ∈ ℝ ∧ A ∈ ℝ → 0 < A ↔ ¬ A ≤ 0
51 48 49 50 sylancr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → 0 < A ↔ ¬ A ≤ 0
52 51 biimpa ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → ¬ A ≤ 0
53 9 rpred ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → C ∈ ℝ
54 53 adantr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → C ∈ ℝ
55 rpcxpcl ⊢ A ∈ ℝ + ∧ C ∈ ℝ → A C ∈ ℝ +
56 3 54 55 syl2anc ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → A C ∈ ℝ +
57 rpgt0 ⊢ A C ∈ ℝ + → 0 < A C
58 rpre ⊢ A C ∈ ℝ + → A C ∈ ℝ
59 ltnle ⊢ 0 ∈ ℝ ∧ A C ∈ ℝ → 0 < A C ↔ ¬ A C ≤ 0
60 48 58 59 sylancr ⊢ A C ∈ ℝ + → 0 < A C ↔ ¬ A C ≤ 0
61 57 60 mpbid ⊢ A C ∈ ℝ + → ¬ A C ≤ 0
62 56 61 syl ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → ¬ A C ≤ 0
63 53 recnd ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → C ∈ ℂ
64 9 rpne0d ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → C ≠ 0
65 0cxp ⊢ C ∈ ℂ ∧ C ≠ 0 → 0 C = 0
66 63 64 65 syl2anc ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → 0 C = 0
67 66 adantr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → 0 C = 0
68 67 breq2d ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → A C ≤ 0 C ↔ A C ≤ 0
69 62 68 mtbird ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → ¬ A C ≤ 0 C
70 52 69 2falsed ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → A ≤ 0 ↔ A C ≤ 0 C
71 breq2 ⊢ 0 = B → A ≤ 0 ↔ A ≤ B
72 oveq1 ⊢ 0 = B → 0 C = B C
73 72 breq2d ⊢ 0 = B → A C ≤ 0 C ↔ A C ≤ B C
74 71 73 bibi12d ⊢ 0 = B → A ≤ 0 ↔ A C ≤ 0 C ↔ A ≤ B ↔ A C ≤ B C
75 70 74 syl5ibcom ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → 0 = B → A ≤ B ↔ A C ≤ B C
76 75 imp ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A ∧ 0 = B → A ≤ B ↔ A C ≤ B C
77 simp2r ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → 0 ≤ B
78 leloe ⊢ 0 ∈ ℝ ∧ B ∈ ℝ → 0 ≤ B ↔ 0 < B ∨ 0 = B
79 48 5 78 sylancr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → 0 ≤ B ↔ 0 < B ∨ 0 = B
80 77 79 mpbid ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → 0 < B ∨ 0 = B
81 80 adantr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → 0 < B ∨ 0 = B
82 47 76 81 mpjaodan ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 < A → A ≤ B ↔ A C ≤ B C
83 simpr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → 0 = A
84 simpl2r ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → 0 ≤ B
85 83 84 eqbrtrrd ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → A ≤ B
86 66 adantr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → 0 C = 0
87 83 oveq1d ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → 0 C = A C
88 86 87 eqtr3d ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → 0 = A C
89 simpl2l ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → B ∈ ℝ
90 53 adantr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → C ∈ ℝ
91 cxpge0 ⊢ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ → 0 ≤ B C
92 89 84 90 91 syl3anc ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → 0 ≤ B C
93 88 92 eqbrtrrd ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → A C ≤ B C
94 85 93 2thd ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + ∧ 0 = A → A ≤ B ↔ A C ≤ B C
95 simp1r ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → 0 ≤ A
96 leloe ⊢ 0 ∈ ℝ ∧ A ∈ ℝ → 0 ≤ A ↔ 0 < A ∨ 0 = A
97 48 49 96 sylancr ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → 0 ≤ A ↔ 0 < A ∨ 0 = A
98 95 97 mpbid ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → 0 < A ∨ 0 = A
99 82 94 98 mpjaodan ⊢ A ∈ ℝ ∧ 0 ≤ A ∧ B ∈ ℝ ∧ 0 ≤ B ∧ C ∈ ℝ + → A ≤ B ↔ A C ≤ B C