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Theorem imo72b2 38295
Description: IMO 1972 B2. (14th International Mathemahics Olympiad in Poland, problem B2). (Contributed by Stanislas Polu, 9-Mar-2020.)
Hypotheses
Ref Expression
imo72b2.1 (𝜑𝐹:ℝ⟶ℝ)
imo72b2.2 (𝜑𝐺:ℝ⟶ℝ)
imo72b2.4 (𝜑𝐵 ∈ ℝ)
imo72b2.5 (𝜑 → ∀𝑢 ∈ ℝ ∀𝑣 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣))))
imo72b2.6 (𝜑 → ∀𝑦 ∈ ℝ (abs‘(𝐹𝑦)) ≤ 1)
imo72b2.7 (𝜑 → ∃𝑥 ∈ ℝ (𝐹𝑥) ≠ 0)
Assertion
Ref Expression
imo72b2 (𝜑 → (abs‘(𝐺𝐵)) ≤ 1)
Distinct variable groups:   𝑢,𝐵,𝑣   𝑥,𝐵   𝑦,𝐵   𝑢,𝐹,𝑣   𝑥,𝐹   𝑦,𝐹   𝑢,𝐺,𝑣   𝑥,𝐺   𝑦,𝐺   𝜑,𝑢,𝑣   𝜑,𝑥   𝜑,𝑦,𝑢

Proof of Theorem imo72b2
Dummy variables 𝑐 𝑡 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 imo72b2.2 . . . . 5 (𝜑𝐺:ℝ⟶ℝ)
2 imo72b2.4 . . . . 5 (𝜑𝐵 ∈ ℝ)
31, 2ffvelrnd 6346 . . . 4 (𝜑 → (𝐺𝐵) ∈ ℝ)
43recnd 10053 . . 3 (𝜑 → (𝐺𝐵) ∈ ℂ)
54abscld 14156 . 2 (𝜑 → (abs‘(𝐺𝐵)) ∈ ℝ)
6 1red 10040 . 2 (𝜑 → 1 ∈ ℝ)
7 simpr 477 . . 3 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 1 < (abs‘(𝐺𝐵)))
81adantr 481 . . . . . . 7 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 𝐺:ℝ⟶ℝ)
92adantr 481 . . . . . . 7 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 𝐵 ∈ ℝ)
108, 9ffvelrnd 6346 . . . . . 6 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (𝐺𝐵) ∈ ℝ)
1110recnd 10053 . . . . 5 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (𝐺𝐵) ∈ ℂ)
1211abscld 14156 . . . 4 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs‘(𝐺𝐵)) ∈ ℝ)
136adantr 481 . . . 4 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 1 ∈ ℝ)
14 ax-resscn 9978 . . . . . . . . 9 ℝ ⊆ ℂ
15 imaco 5628 . . . . . . . . . . . 12 ((abs ∘ 𝐹) “ ℝ) = (abs “ (𝐹 “ ℝ))
1615eqcomi 2629 . . . . . . . . . . 11 (abs “ (𝐹 “ ℝ)) = ((abs ∘ 𝐹) “ ℝ)
17 imassrn 5465 . . . . . . . . . . . . 13 ((abs ∘ 𝐹) “ ℝ) ⊆ ran (abs ∘ 𝐹)
1817a1i 11 . . . . . . . . . . . 12 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ((abs ∘ 𝐹) “ ℝ) ⊆ ran (abs ∘ 𝐹))
19 imo72b2.1 . . . . . . . . . . . . . . 15 (𝜑𝐹:ℝ⟶ℝ)
2019adantr 481 . . . . . . . . . . . . . 14 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 𝐹:ℝ⟶ℝ)
21 absf 14058 . . . . . . . . . . . . . . . 16 abs:ℂ⟶ℝ
2221a1i 11 . . . . . . . . . . . . . . 15 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → abs:ℂ⟶ℝ)
2314a1i 11 . . . . . . . . . . . . . . 15 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ℝ ⊆ ℂ)
2422, 23fssresd 6058 . . . . . . . . . . . . . 14 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs ↾ ℝ):ℝ⟶ℝ)
2520, 24fco2d 38281 . . . . . . . . . . . . 13 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs ∘ 𝐹):ℝ⟶ℝ)
26 frn 6040 . . . . . . . . . . . . 13 ((abs ∘ 𝐹):ℝ⟶ℝ → ran (abs ∘ 𝐹) ⊆ ℝ)
2725, 26syl 17 . . . . . . . . . . . 12 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ran (abs ∘ 𝐹) ⊆ ℝ)
2818, 27sstrd 3605 . . . . . . . . . . 11 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ((abs ∘ 𝐹) “ ℝ) ⊆ ℝ)
2916, 28syl5eqss 3641 . . . . . . . . . 10 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs “ (𝐹 “ ℝ)) ⊆ ℝ)
30 0re 10025 . . . . . . . . . . . . . . . 16 0 ∈ ℝ
3130ne0ii 3915 . . . . . . . . . . . . . . 15 ℝ ≠ ∅
3231a1i 11 . . . . . . . . . . . . . 14 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ℝ ≠ ∅)
3332, 25wnefimgd 38280 . . . . . . . . . . . . 13 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ((abs ∘ 𝐹) “ ℝ) ≠ ∅)
3433necomd 2846 . . . . . . . . . . . 12 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ∅ ≠ ((abs ∘ 𝐹) “ ℝ))
3516a1i 11 . . . . . . . . . . . 12 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs “ (𝐹 “ ℝ)) = ((abs ∘ 𝐹) “ ℝ))
3634, 35neeqtrrd 2865 . . . . . . . . . . 11 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ∅ ≠ (abs “ (𝐹 “ ℝ)))
3736necomd 2846 . . . . . . . . . 10 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs “ (𝐹 “ ℝ)) ≠ ∅)
38 simpr 477 . . . . . . . . . . . . 13 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑐 = 1) → 𝑐 = 1)
3938breq2d 4656 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑐 = 1) → (𝑡𝑐𝑡 ≤ 1))
4039ralbidv 2983 . . . . . . . . . . 11 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑐 = 1) → (∀𝑡 ∈ (abs “ (𝐹 “ ℝ))𝑡𝑐 ↔ ∀𝑡 ∈ (abs “ (𝐹 “ ℝ))𝑡 ≤ 1))
41 imo72b2.6 . . . . . . . . . . . . 13 (𝜑 → ∀𝑦 ∈ ℝ (abs‘(𝐹𝑦)) ≤ 1)
4219, 41extoimad 38284 . . . . . . . . . . . 12 (𝜑 → ∀𝑡 ∈ (abs “ (𝐹 “ ℝ))𝑡 ≤ 1)
4342adantr 481 . . . . . . . . . . 11 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ∀𝑡 ∈ (abs “ (𝐹 “ ℝ))𝑡 ≤ 1)
4413, 40, 43rspcedvd 3312 . . . . . . . . . 10 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ∃𝑐 ∈ ℝ ∀𝑡 ∈ (abs “ (𝐹 “ ℝ))𝑡𝑐)
4529, 37, 44suprcld 10971 . . . . . . . . 9 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → sup((abs “ (𝐹 “ ℝ)), ℝ, < ) ∈ ℝ)
4614, 45sseldi 3593 . . . . . . . 8 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → sup((abs “ (𝐹 “ ℝ)), ℝ, < ) ∈ ℂ)
4714, 12sseldi 3593 . . . . . . . 8 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs‘(𝐺𝐵)) ∈ ℂ)
4846, 47mulcomd 10046 . . . . . . 7 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (sup((abs “ (𝐹 “ ℝ)), ℝ, < ) · (abs‘(𝐺𝐵))) = ((abs‘(𝐺𝐵)) · sup((abs “ (𝐹 “ ℝ)), ℝ, < )))
4930a1i 11 . . . . . . . . . . . 12 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 0 ∈ ℝ)
50 0lt1 10535 . . . . . . . . . . . . 13 0 < 1
5150a1i 11 . . . . . . . . . . . 12 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 0 < 1)
5249, 13, 12, 51, 7lttrd 10183 . . . . . . . . . . 11 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 0 < (abs‘(𝐺𝐵)))
5352gt0ne0d 10577 . . . . . . . . . 10 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs‘(𝐺𝐵)) ≠ 0)
5445, 12, 53redivcld 10838 . . . . . . . . 9 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (sup((abs “ (𝐹 “ ℝ)), ℝ, < ) / (abs‘(𝐺𝐵))) ∈ ℝ)
5520adantr 481 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → 𝐹:ℝ⟶ℝ)
568adantr 481 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → 𝐺:ℝ⟶ℝ)
57 simpr 477 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → 𝑢 ∈ ℝ)
589adantr 481 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → 𝐵 ∈ ℝ)
59 simpr 477 . . . . . . . . . . . . . . . . . . . 20 ((𝜑𝑣 = 𝐵) → 𝑣 = 𝐵)
6059oveq2d 6651 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑣 = 𝐵) → (𝑢 + 𝑣) = (𝑢 + 𝐵))
6160fveq2d 6182 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑣 = 𝐵) → (𝐹‘(𝑢 + 𝑣)) = (𝐹‘(𝑢 + 𝐵)))
6259oveq2d 6651 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑣 = 𝐵) → (𝑢𝑣) = (𝑢𝐵))
6362fveq2d 6182 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑣 = 𝐵) → (𝐹‘(𝑢𝑣)) = (𝐹‘(𝑢𝐵)))
6461, 63oveq12d 6653 . . . . . . . . . . . . . . . . 17 ((𝜑𝑣 = 𝐵) → ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = ((𝐹‘(𝑢 + 𝐵)) + (𝐹‘(𝑢𝐵))))
6559fveq2d 6182 . . . . . . . . . . . . . . . . . . 19 ((𝜑𝑣 = 𝐵) → (𝐺𝑣) = (𝐺𝐵))
6665oveq2d 6651 . . . . . . . . . . . . . . . . . 18 ((𝜑𝑣 = 𝐵) → ((𝐹𝑢) · (𝐺𝑣)) = ((𝐹𝑢) · (𝐺𝐵)))
6766oveq2d 6651 . . . . . . . . . . . . . . . . 17 ((𝜑𝑣 = 𝐵) → (2 · ((𝐹𝑢) · (𝐺𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝐵))))
6864, 67eqeq12d 2635 . . . . . . . . . . . . . . . 16 ((𝜑𝑣 = 𝐵) → (((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣))) ↔ ((𝐹‘(𝑢 + 𝐵)) + (𝐹‘(𝑢𝐵))) = (2 · ((𝐹𝑢) · (𝐺𝐵)))))
6968ralbidv 2983 . . . . . . . . . . . . . . 15 ((𝜑𝑣 = 𝐵) → (∀𝑢 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣))) ↔ ∀𝑢 ∈ ℝ ((𝐹‘(𝑢 + 𝐵)) + (𝐹‘(𝑢𝐵))) = (2 · ((𝐹𝑢) · (𝐺𝐵)))))
70 imo72b2.5 . . . . . . . . . . . . . . . 16 (𝜑 → ∀𝑢 ∈ ℝ ∀𝑣 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣))))
71 ralcom2 3099 . . . . . . . . . . . . . . . . . 18 (∀𝑢 ∈ ℝ ∀𝑣 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣))) → ∀𝑣 ∈ ℝ ∀𝑢 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣))))
7271a1i 11 . . . . . . . . . . . . . . . . 17 (𝜑 → (∀𝑢 ∈ ℝ ∀𝑣 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣))) → ∀𝑣 ∈ ℝ ∀𝑢 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣)))))
7372imp 445 . . . . . . . . . . . . . . . 16 ((𝜑 ∧ ∀𝑢 ∈ ℝ ∀𝑣 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣)))) → ∀𝑣 ∈ ℝ ∀𝑢 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣))))
7470, 73mpdan 701 . . . . . . . . . . . . . . 15 (𝜑 → ∀𝑣 ∈ ℝ ∀𝑢 ∈ ℝ ((𝐹‘(𝑢 + 𝑣)) + (𝐹‘(𝑢𝑣))) = (2 · ((𝐹𝑢) · (𝐺𝑣))))
7569, 2, 74rspcdvinvd 38294 . . . . . . . . . . . . . 14 (𝜑 → ∀𝑢 ∈ ℝ ((𝐹‘(𝑢 + 𝐵)) + (𝐹‘(𝑢𝐵))) = (2 · ((𝐹𝑢) · (𝐺𝐵))))
7675r19.21bi 2929 . . . . . . . . . . . . 13 ((𝜑𝑢 ∈ ℝ) → ((𝐹‘(𝑢 + 𝐵)) + (𝐹‘(𝑢𝐵))) = (2 · ((𝐹𝑢) · (𝐺𝐵))))
7776adantlr 750 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → ((𝐹‘(𝑢 + 𝐵)) + (𝐹‘(𝑢𝐵))) = (2 · ((𝐹𝑢) · (𝐺𝐵))))
7841ad2antrr 761 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → ∀𝑦 ∈ ℝ (abs‘(𝐹𝑦)) ≤ 1)
7955, 56, 57, 58, 77, 78imo72b2lem0 38285 . . . . . . . . . . 11 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → ((abs‘(𝐹𝑢)) · (abs‘(𝐺𝐵))) ≤ sup((abs “ (𝐹 “ ℝ)), ℝ, < ))
80 0xr 10071 . . . . . . . . . . . . 13 0 ∈ ℝ*
8180a1i 11 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → 0 ∈ ℝ*)
82 1re 10024 . . . . . . . . . . . . . 14 1 ∈ ℝ
8382rexri 10082 . . . . . . . . . . . . 13 1 ∈ ℝ*
8483a1i 11 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → 1 ∈ ℝ*)
8512adantr 481 . . . . . . . . . . . . 13 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → (abs‘(𝐺𝐵)) ∈ ℝ)
8685rexrd 10074 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → (abs‘(𝐺𝐵)) ∈ ℝ*)
8750a1i 11 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → 0 < 1)
88 simplr 791 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → 1 < (abs‘(𝐺𝐵)))
8981, 84, 86, 87, 88xrlttrd 11975 . . . . . . . . . . 11 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → 0 < (abs‘(𝐺𝐵)))
9020ffvelrnda 6345 . . . . . . . . . . . . 13 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → (𝐹𝑢) ∈ ℝ)
9190recnd 10053 . . . . . . . . . . . 12 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → (𝐹𝑢) ∈ ℂ)
9291abscld 14156 . . . . . . . . . . 11 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → (abs‘(𝐹𝑢)) ∈ ℝ)
9345adantr 481 . . . . . . . . . . 11 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → sup((abs “ (𝐹 “ ℝ)), ℝ, < ) ∈ ℝ)
9479, 89, 85, 92, 93lemuldiv3d 38292 . . . . . . . . . 10 (((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) ∧ 𝑢 ∈ ℝ) → (abs‘(𝐹𝑢)) ≤ (sup((abs “ (𝐹 “ ℝ)), ℝ, < ) / (abs‘(𝐺𝐵))))
9594ralrimiva 2963 . . . . . . . . 9 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ∀𝑢 ∈ ℝ (abs‘(𝐹𝑢)) ≤ (sup((abs “ (𝐹 “ ℝ)), ℝ, < ) / (abs‘(𝐺𝐵))))
9620, 54, 95imo72b2lem2 38287 . . . . . . . 8 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → sup((abs “ (𝐹 “ ℝ)), ℝ, < ) ≤ (sup((abs “ (𝐹 “ ℝ)), ℝ, < ) / (abs‘(𝐺𝐵))))
9796, 52, 12, 45, 45lemuldiv4d 38293 . . . . . . 7 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (sup((abs “ (𝐹 “ ℝ)), ℝ, < ) · (abs‘(𝐺𝐵))) ≤ sup((abs “ (𝐹 “ ℝ)), ℝ, < ))
9848, 97eqbrtrrd 4668 . . . . . 6 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ((abs‘(𝐺𝐵)) · sup((abs “ (𝐹 “ ℝ)), ℝ, < )) ≤ sup((abs “ (𝐹 “ ℝ)), ℝ, < ))
99 imo72b2.7 . . . . . . . 8 (𝜑 → ∃𝑥 ∈ ℝ (𝐹𝑥) ≠ 0)
10099adantr 481 . . . . . . 7 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ∃𝑥 ∈ ℝ (𝐹𝑥) ≠ 0)
10141adantr 481 . . . . . . 7 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ∀𝑦 ∈ ℝ (abs‘(𝐹𝑦)) ≤ 1)
10220, 100, 101imo72b2lem1 38291 . . . . . 6 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 0 < sup((abs “ (𝐹 “ ℝ)), ℝ, < ))
10398, 102, 45, 12, 45lemuldiv3d 38292 . . . . 5 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs‘(𝐺𝐵)) ≤ (sup((abs “ (𝐹 “ ℝ)), ℝ, < ) / sup((abs “ (𝐹 “ ℝ)), ℝ, < )))
10423, 45sseldd 3596 . . . . . . 7 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → sup((abs “ (𝐹 “ ℝ)), ℝ, < ) ∈ ℂ)
105102gt0ne0d 10577 . . . . . . 7 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → sup((abs “ (𝐹 “ ℝ)), ℝ, < ) ≠ 0)
106104, 105dividd 10784 . . . . . 6 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (sup((abs “ (𝐹 “ ℝ)), ℝ, < ) / sup((abs “ (𝐹 “ ℝ)), ℝ, < )) = 1)
107106eqcomd 2626 . . . . 5 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → 1 = (sup((abs “ (𝐹 “ ℝ)), ℝ, < ) / sup((abs “ (𝐹 “ ℝ)), ℝ, < )))
108103, 107breqtrrd 4672 . . . 4 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → (abs‘(𝐺𝐵)) ≤ 1)
10912, 13, 108lensymd 10173 . . 3 ((𝜑 ∧ 1 < (abs‘(𝐺𝐵))) → ¬ 1 < (abs‘(𝐺𝐵)))
1107, 109pm2.65da 599 . 2 (𝜑 → ¬ 1 < (abs‘(𝐺𝐵)))
1115, 6, 110nltled 10172 1 (𝜑 → (abs‘(𝐺𝐵)) ≤ 1)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 384   = wceq 1481  wcel 1988  wne 2791  wral 2909  wrex 2910  wss 3567  c0 3907   class class class wbr 4644  ran crn 5105  cima 5107  ccom 5108  wf 5872  cfv 5876  (class class class)co 6635  supcsup 8331  cc 9919  cr 9920  0cc0 9921  1c1 9922   + caddc 9924   · cmul 9926  *cxr 10058   < clt 10059  cle 10060  cmin 10251   / cdiv 10669  2c2 11055  abscabs 13955
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1720  ax-4 1735  ax-5 1837  ax-6 1886  ax-7 1933  ax-8 1990  ax-9 1997  ax-10 2017  ax-11 2032  ax-12 2045  ax-13 2244  ax-ext 2600  ax-sep 4772  ax-nul 4780  ax-pow 4834  ax-pr 4897  ax-un 6934  ax-cnex 9977  ax-resscn 9978  ax-1cn 9979  ax-icn 9980  ax-addcl 9981  ax-addrcl 9982  ax-mulcl 9983  ax-mulrcl 9984  ax-mulcom 9985  ax-addass 9986  ax-mulass 9987  ax-distr 9988  ax-i2m1 9989  ax-1ne0 9990  ax-1rid 9991  ax-rnegex 9992  ax-rrecex 9993  ax-cnre 9994  ax-pre-lttri 9995  ax-pre-lttrn 9996  ax-pre-ltadd 9997  ax-pre-mulgt0 9998  ax-pre-sup 9999
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1484  df-ex 1703  df-nf 1708  df-sb 1879  df-eu 2472  df-mo 2473  df-clab 2607  df-cleq 2613  df-clel 2616  df-nfc 2751  df-ne 2792  df-nel 2895  df-ral 2914  df-rex 2915  df-reu 2916  df-rmo 2917  df-rab 2918  df-v 3197  df-sbc 3430  df-csb 3527  df-dif 3570  df-un 3572  df-in 3574  df-ss 3581  df-pss 3583  df-nul 3908  df-if 4078  df-pw 4151  df-sn 4169  df-pr 4171  df-tp 4173  df-op 4175  df-uni 4428  df-iun 4513  df-br 4645  df-opab 4704  df-mpt 4721  df-tr 4744  df-id 5014  df-eprel 5019  df-po 5025  df-so 5026  df-fr 5063  df-we 5065  df-xp 5110  df-rel 5111  df-cnv 5112  df-co 5113  df-dm 5114  df-rn 5115  df-res 5116  df-ima 5117  df-pred 5668  df-ord 5714  df-on 5715  df-lim 5716  df-suc 5717  df-iota 5839  df-fun 5878  df-fn 5879  df-f 5880  df-f1 5881  df-fo 5882  df-f1o 5883  df-fv 5884  df-riota 6596  df-ov 6638  df-oprab 6639  df-mpt2 6640  df-om 7051  df-2nd 7154  df-wrecs 7392  df-recs 7453  df-rdg 7491  df-er 7727  df-en 7941  df-dom 7942  df-sdom 7943  df-sup 8333  df-pnf 10061  df-mnf 10062  df-xr 10063  df-ltxr 10064  df-le 10065  df-sub 10253  df-neg 10254  df-div 10670  df-nn 11006  df-2 11064  df-3 11065  df-n0 11278  df-z 11363  df-uz 11673  df-rp 11818  df-seq 12785  df-exp 12844  df-cj 13820  df-re 13821  df-im 13822  df-sqrt 13956  df-abs 13957
This theorem is referenced by: (None)
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