Metamath Proof Explorer


Theorem xlemul1a

Description: Extended real version of lemul1a . (Contributed by Mario Carneiro, 20-Aug-2015)

Ref Expression
Assertion xlemul1a ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 ≤ C ∧ A ≤ B → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C

Proof

Step Hyp Ref Expression
1 0xr ⊢ 0 ∈ ℝ *
2 simpr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → C ∈ ℝ *
3 xrleloe ⊢ 0 ∈ ℝ * ∧ C ∈ ℝ * → 0 ≤ C ↔ 0 < C ∨ 0 = C
4 1 2 3 sylancr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → 0 ≤ C ↔ 0 < C ∨ 0 = C
5 simpllr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → C ∈ ℝ *
6 elxr ⊢ C ∈ ℝ * ↔ C ∈ ℝ ∨ C = +∞ ∨ C = −∞
7 5 6 sylib ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → C ∈ ℝ ∨ C = +∞ ∨ C = −∞
8 simplrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ≤ B
9 simprll ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ∈ ℝ
10 simprlr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → B ∈ ℝ
11 simprr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → C ∈ ℝ
12 simplrl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → 0 < C
13 lemul1 ⊢ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ ∧ 0 < C → A ≤ B ↔ A ⁢ C ≤ B ⁢ C
14 9 10 11 12 13 syl112anc ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ≤ B ↔ A ⁢ C ≤ B ⁢ C
15 8 14 mpbid ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⁢ C ≤ B ⁢ C
16 rexmul ⊢ A ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 C = A ⁢ C
17 9 11 16 syl2anc ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 C = A ⁢ C
18 rexmul ⊢ B ∈ ℝ ∧ C ∈ ℝ → B ⋅ 𝑒 C = B ⁢ C
19 10 11 18 syl2anc ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → B ⋅ 𝑒 C = B ⁢ C
20 15 17 19 3brtr4d ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ C ∈ ℝ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
21 20 expr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → C ∈ ℝ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
22 simprl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A ∈ ℝ
23 0re ⊢ 0 ∈ ℝ
24 lttri4 ⊢ A ∈ ℝ ∧ 0 ∈ ℝ → A < 0 ∨ A = 0 ∨ 0 < A
25 22 23 24 sylancl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A < 0 ∨ A = 0 ∨ 0 < A
26 simplll ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B → A ∈ ℝ *
27 26 adantr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A ∈ ℝ *
28 xmulpnf1n ⊢ A ∈ ℝ * ∧ A < 0 → A ⋅ 𝑒 +∞ = −∞
29 27 28 sylan ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ A < 0 → A ⋅ 𝑒 +∞ = −∞
30 simpllr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B → B ∈ ℝ *
31 30 adantr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → B ∈ ℝ *
32 31 adantr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ A < 0 → B ∈ ℝ *
33 pnfxr ⊢ +∞ ∈ ℝ *
34 xmulcl ⊢ B ∈ ℝ * ∧ +∞ ∈ ℝ * → B ⋅ 𝑒 +∞ ∈ ℝ *
35 32 33 34 sylancl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ A < 0 → B ⋅ 𝑒 +∞ ∈ ℝ *
36 mnfle ⊢ B ⋅ 𝑒 +∞ ∈ ℝ * → −∞ ≤ B ⋅ 𝑒 +∞
37 35 36 syl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ A < 0 → −∞ ≤ B ⋅ 𝑒 +∞
38 29 37 eqbrtrd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ A < 0 → A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞
39 38 ex ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A < 0 → A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞
40 oveq1 ⊢ A = 0 → A ⋅ 𝑒 +∞ = 0 ⋅ 𝑒 +∞
41 xmul02 ⊢ +∞ ∈ ℝ * → 0 ⋅ 𝑒 +∞ = 0
42 33 41 ax-mp ⊢ 0 ⋅ 𝑒 +∞ = 0
43 40 42 eqtrdi ⊢ A = 0 → A ⋅ 𝑒 +∞ = 0
44 43 adantl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ A = 0 → A ⋅ 𝑒 +∞ = 0
45 simplrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A ≤ B
46 breq1 ⊢ A = 0 → A ≤ B ↔ 0 ≤ B
47 45 46 syl5ibcom ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A = 0 → 0 ≤ B
48 simprr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → B ∈ ℝ
49 leloe ⊢ 0 ∈ ℝ ∧ B ∈ ℝ → 0 ≤ B ↔ 0 < B ∨ 0 = B
50 23 48 49 sylancr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → 0 ≤ B ↔ 0 < B ∨ 0 = B
51 47 50 sylibd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A = 0 → 0 < B ∨ 0 = B
52 51 imp ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ A = 0 → 0 < B ∨ 0 = B
53 pnfge ⊢ 0 ∈ ℝ * → 0 ≤ +∞
54 1 53 ax-mp ⊢ 0 ≤ +∞
55 xmulpnf1 ⊢ B ∈ ℝ * ∧ 0 < B → B ⋅ 𝑒 +∞ = +∞
56 31 55 sylan ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < B → B ⋅ 𝑒 +∞ = +∞
57 54 56 breqtrrid ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < B → 0 ≤ B ⋅ 𝑒 +∞
58 xrleid ⊢ 0 ∈ ℝ * → 0 ≤ 0
59 1 58 ax-mp ⊢ 0 ≤ 0
60 59 42 breqtrri ⊢ 0 ≤ 0 ⋅ 𝑒 +∞
61 simpr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 = B → 0 = B
62 61 oveq1d ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 = B → 0 ⋅ 𝑒 +∞ = B ⋅ 𝑒 +∞
63 60 62 breqtrid ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 = B → 0 ≤ B ⋅ 𝑒 +∞
64 57 63 jaodan ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < B ∨ 0 = B → 0 ≤ B ⋅ 𝑒 +∞
65 52 64 syldan ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ A = 0 → 0 ≤ B ⋅ 𝑒 +∞
66 44 65 eqbrtrd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ A = 0 → A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞
67 66 ex ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A = 0 → A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞
68 pnfge ⊢ +∞ ∈ ℝ * → +∞ ≤ +∞
69 33 68 ax-mp ⊢ +∞ ≤ +∞
70 26 adantr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < A → A ∈ ℝ *
71 simprr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < A → 0 < A
72 xmulpnf1 ⊢ A ∈ ℝ * ∧ 0 < A → A ⋅ 𝑒 +∞ = +∞
73 70 71 72 syl2anc ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < A → A ⋅ 𝑒 +∞ = +∞
74 30 adantr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < A → B ∈ ℝ *
75 ltletr ⊢ 0 ∈ ℝ ∧ A ∈ ℝ ∧ B ∈ ℝ → 0 < A ∧ A ≤ B → 0 < B
76 23 75 mp3an1 ⊢ A ∈ ℝ ∧ B ∈ ℝ → 0 < A ∧ A ≤ B → 0 < B
77 76 adantl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → 0 < A ∧ A ≤ B → 0 < B
78 45 77 mpan2d ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → 0 < A → 0 < B
79 78 impr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < A → 0 < B
80 74 79 55 syl2anc ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < A → B ⋅ 𝑒 +∞ = +∞
81 73 80 breq12d ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < A → A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞ ↔ +∞ ≤ +∞
82 69 81 mpbiri ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ ∧ 0 < A → A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞
83 82 expr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → 0 < A → A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞
84 39 67 83 3jaod ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A < 0 ∨ A = 0 ∨ 0 < A → A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞
85 25 84 mpd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞
86 oveq2 ⊢ C = +∞ → A ⋅ 𝑒 C = A ⋅ 𝑒 +∞
87 oveq2 ⊢ C = +∞ → B ⋅ 𝑒 C = B ⋅ 𝑒 +∞
88 86 87 breq12d ⊢ C = +∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C ↔ A ⋅ 𝑒 +∞ ≤ B ⋅ 𝑒 +∞
89 85 88 syl5ibrcom ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → C = +∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
90 nltmnf ⊢ 0 ∈ ℝ * → ¬ 0 < −∞
91 1 90 ax-mp ⊢ ¬ 0 < −∞
92 breq2 ⊢ C = −∞ → 0 < C ↔ 0 < −∞
93 91 92 mtbiri ⊢ C = −∞ → ¬ 0 < C
94 93 con2i ⊢ 0 < C → ¬ C = −∞
95 94 ad2antrl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B → ¬ C = −∞
96 95 adantr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → ¬ C = −∞
97 96 pm2.21d ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → C = −∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
98 21 89 97 3jaod ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → C ∈ ℝ ∨ C = +∞ ∨ C = −∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
99 7 98 mpd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
100 99 anassrs ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B ∈ ℝ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
101 xmulcl ⊢ A ∈ ℝ * ∧ C ∈ ℝ * → A ⋅ 𝑒 C ∈ ℝ *
102 101 adantlr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → A ⋅ 𝑒 C ∈ ℝ *
103 102 ad2antrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = +∞ → A ⋅ 𝑒 C ∈ ℝ *
104 pnfge ⊢ A ⋅ 𝑒 C ∈ ℝ * → A ⋅ 𝑒 C ≤ +∞
105 103 104 syl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = +∞ → A ⋅ 𝑒 C ≤ +∞
106 oveq1 ⊢ B = +∞ → B ⋅ 𝑒 C = +∞ ⋅ 𝑒 C
107 xmulpnf2 ⊢ C ∈ ℝ * ∧ 0 < C → +∞ ⋅ 𝑒 C = +∞
108 107 ad2ant2lr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B → +∞ ⋅ 𝑒 C = +∞
109 106 108 sylan9eqr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = +∞ → B ⋅ 𝑒 C = +∞
110 105 109 breqtrrd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = +∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
111 110 adantlr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B = +∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
112 simplrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → A ≤ B
113 simpr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → B = −∞
114 26 adantr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → A ∈ ℝ *
115 mnfle ⊢ A ∈ ℝ * → −∞ ≤ A
116 114 115 syl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → −∞ ≤ A
117 113 116 eqbrtrd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → B ≤ A
118 xrletri3 ⊢ A ∈ ℝ * ∧ B ∈ ℝ * → A = B ↔ A ≤ B ∧ B ≤ A
119 118 ad3antrrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → A = B ↔ A ≤ B ∧ B ≤ A
120 112 117 119 mpbir2and ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → A = B
121 120 oveq1d ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → A ⋅ 𝑒 C = B ⋅ 𝑒 C
122 xmulcl ⊢ B ∈ ℝ * ∧ C ∈ ℝ * → B ⋅ 𝑒 C ∈ ℝ *
123 122 adantll ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → B ⋅ 𝑒 C ∈ ℝ *
124 123 ad2antrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → B ⋅ 𝑒 C ∈ ℝ *
125 xrleid ⊢ B ⋅ 𝑒 C ∈ ℝ * → B ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
126 124 125 syl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → B ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
127 121 126 eqbrtrd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ B = −∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
128 127 adantlr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ ∧ B = −∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
129 elxr ⊢ B ∈ ℝ * ↔ B ∈ ℝ ∨ B = +∞ ∨ B = −∞
130 30 129 sylib ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B → B ∈ ℝ ∨ B = +∞ ∨ B = −∞
131 130 adantr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ → B ∈ ℝ ∨ B = +∞ ∨ B = −∞
132 100 111 128 131 mpjao3dan ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A ∈ ℝ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
133 simplrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → A ≤ B
134 30 adantr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → B ∈ ℝ *
135 pnfge ⊢ B ∈ ℝ * → B ≤ +∞
136 134 135 syl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → B ≤ +∞
137 simpr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → A = +∞
138 136 137 breqtrrd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → B ≤ A
139 118 ad3antrrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → A = B ↔ A ≤ B ∧ B ≤ A
140 133 138 139 mpbir2and ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → A = B
141 140 oveq1d ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → A ⋅ 𝑒 C = B ⋅ 𝑒 C
142 123 125 syl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → B ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
143 142 ad2antrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → B ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
144 141 143 eqbrtrd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = +∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
145 oveq1 ⊢ A = −∞ → A ⋅ 𝑒 C = −∞ ⋅ 𝑒 C
146 xmulmnf2 ⊢ C ∈ ℝ * ∧ 0 < C → −∞ ⋅ 𝑒 C = −∞
147 146 ad2ant2lr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B → −∞ ⋅ 𝑒 C = −∞
148 145 147 sylan9eqr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = −∞ → A ⋅ 𝑒 C = −∞
149 123 ad2antrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = −∞ → B ⋅ 𝑒 C ∈ ℝ *
150 mnfle ⊢ B ⋅ 𝑒 C ∈ ℝ * → −∞ ≤ B ⋅ 𝑒 C
151 149 150 syl ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = −∞ → −∞ ≤ B ⋅ 𝑒 C
152 148 151 eqbrtrd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B ∧ A = −∞ → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
153 elxr ⊢ A ∈ ℝ * ↔ A ∈ ℝ ∨ A = +∞ ∨ A = −∞
154 26 153 sylib ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B → A ∈ ℝ ∨ A = +∞ ∨ A = −∞
155 132 144 152 154 mpjao3dan ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 < C ∧ A ≤ B → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
156 155 exp32 ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → 0 < C → A ≤ B → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
157 xmul01 ⊢ A ∈ ℝ * → A ⋅ 𝑒 0 = 0
158 157 ad2antrr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → A ⋅ 𝑒 0 = 0
159 xmul01 ⊢ B ∈ ℝ * → B ⋅ 𝑒 0 = 0
160 159 ad2antlr ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → B ⋅ 𝑒 0 = 0
161 158 160 breq12d ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → A ⋅ 𝑒 0 ≤ B ⋅ 𝑒 0 ↔ 0 ≤ 0
162 59 161 mpbiri ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → A ⋅ 𝑒 0 ≤ B ⋅ 𝑒 0
163 oveq2 ⊢ 0 = C → A ⋅ 𝑒 0 = A ⋅ 𝑒 C
164 oveq2 ⊢ 0 = C → B ⋅ 𝑒 0 = B ⋅ 𝑒 C
165 163 164 breq12d ⊢ 0 = C → A ⋅ 𝑒 0 ≤ B ⋅ 𝑒 0 ↔ A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
166 162 165 syl5ibcom ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → 0 = C → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
167 166 a1dd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → 0 = C → A ≤ B → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
168 156 167 jaod ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → 0 < C ∨ 0 = C → A ≤ B → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
169 4 168 sylbid ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * → 0 ≤ C → A ≤ B → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
170 169 expimpd ⊢ A ∈ ℝ * ∧ B ∈ ℝ * → C ∈ ℝ * ∧ 0 ≤ C → A ≤ B → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
171 170 3impia ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 ≤ C → A ≤ B → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C
172 171 imp ⊢ A ∈ ℝ * ∧ B ∈ ℝ * ∧ C ∈ ℝ * ∧ 0 ≤ C ∧ A ≤ B → A ⋅ 𝑒 C ≤ B ⋅ 𝑒 C