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Theorem ulmbdd 26144

Description: A uniform limit of bounded functions is bounded. (Contributed by Mario Carneiro, 27-Feb-2015.)

**Hypotheses**
Ref	Expression
ulmbdd.z	⊢ 𝑍 = (ℤ_≥‘𝑀)
ulmbdd.m	⊢ (𝜑 → 𝑀 ∈ ℤ)
ulmbdd.f	⊢ (𝜑 → 𝐹:𝑍⟶(ℂ ↑_m 𝑆))
ulmbdd.b	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ∃𝑥 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥)
ulmbdd.u	⊢ (𝜑 → 𝐹(⇝_𝑢‘𝑆)𝐺)

**Assertion**
Ref	Expression
ulmbdd	⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑥)

Distinct variable groups: 𝑥,𝑘,𝑧,𝐹 𝑘,𝐺,𝑥,𝑧 𝜑,𝑘,𝑥,𝑧 𝑆,𝑘,𝑥,𝑧 𝑘,𝑀,𝑧 𝑘,𝑍,𝑥,𝑧 Allowed substitution hint: 𝑀(𝑥)

Proof of Theorem ulmbdd Dummy variables 𝑗 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ulmbdd.z	. . 3 ⊢ 𝑍 = (ℤ_≥‘𝑀)
2		ulmbdd.m	. . 3 ⊢ (𝜑 → 𝑀 ∈ ℤ)
3		ulmbdd.f	. . 3 ⊢ (𝜑 → 𝐹:𝑍⟶(ℂ ↑_m 𝑆))
4		eqidd 2731	. . 3 ⊢ ((𝜑 ∧ (𝑘 ∈ 𝑍 ∧ 𝑧 ∈ 𝑆)) → ((𝐹‘𝑘)‘𝑧) = ((𝐹‘𝑘)‘𝑧))
5		eqidd 2731	. . 3 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝑆) → (𝐺‘𝑧) = (𝐺‘𝑧))
6		ulmbdd.u	. . 3 ⊢ (𝜑 → 𝐹(⇝_𝑢‘𝑆)𝐺)
7		1rp 12984	. . . 4 ⊢ 1 ∈ ℝ⁺
8	7	a1i 11	. . 3 ⊢ (𝜑 → 1 ∈ ℝ⁺)
9	1, 2, 3, 4, 5, 6, 8	ulmi 26132	. 2 ⊢ (𝜑 → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1)
10	1	r19.2uz 15304	. . 3 ⊢ (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1 → ∃𝑘 ∈ 𝑍 ∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1)
11		ulmbdd.b	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ∃𝑥 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥)
12		r19.26 3109	. . . . . . . . 9 ⊢ (∀𝑧 ∈ 𝑆 ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1) ↔ (∀𝑧 ∈ 𝑆 (abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ ∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))
13		peano2re 11393	. . . . . . . . . . 11 ⊢ (𝑥 ∈ ℝ → (𝑥 + 1) ∈ ℝ)
14	13	adantl 480	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) → (𝑥 + 1) ∈ ℝ)
15		ulmcl 26127	. . . . . . . . . . . . . . . . 17 ⊢ (𝐹(⇝_𝑢‘𝑆)𝐺 → 𝐺:𝑆⟶ℂ)
16	6, 15	syl 17	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝐺:𝑆⟶ℂ)
17	16	ad3antrrr 726	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → 𝐺:𝑆⟶ℂ)
18		simprl 767	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → 𝑧 ∈ 𝑆)
19	17, 18	ffvelcdmd 7088	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (𝐺‘𝑧) ∈ ℂ)
20	19	abscld 15389	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘(𝐺‘𝑧)) ∈ ℝ)
21	3	ad3antrrr 726	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → 𝐹:𝑍⟶(ℂ ↑_m 𝑆))
22		simpllr 772	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → 𝑘 ∈ 𝑍)
23	21, 22	ffvelcdmd 7088	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (𝐹‘𝑘) ∈ (ℂ ↑_m 𝑆))
24		elmapi 8847	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐹‘𝑘) ∈ (ℂ ↑_m 𝑆) → (𝐹‘𝑘):𝑆⟶ℂ)
25	23, 24	syl 17	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (𝐹‘𝑘):𝑆⟶ℂ)
26	25, 18	ffvelcdmd 7088	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → ((𝐹‘𝑘)‘𝑧) ∈ ℂ)
27	26	abscld 15389	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘((𝐹‘𝑘)‘𝑧)) ∈ ℝ)
28	19, 26	subcld 11577	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → ((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧)) ∈ ℂ)
29	28	abscld 15389	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) ∈ ℝ)
30	27, 29	readdcld 11249	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → ((abs‘((𝐹‘𝑘)‘𝑧)) + (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧)))) ∈ ℝ)
31	14	adantr 479	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (𝑥 + 1) ∈ ℝ)
32	26, 19	pncan3d 11580	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (((𝐹‘𝑘)‘𝑧) + ((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) = (𝐺‘𝑧))
33	32	fveq2d 6896	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘(((𝐹‘𝑘)‘𝑧) + ((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧)))) = (abs‘(𝐺‘𝑧)))
34	26, 28	abstrid 15409	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘(((𝐹‘𝑘)‘𝑧) + ((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧)))) ≤ ((abs‘((𝐹‘𝑘)‘𝑧)) + (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧)))))
35	33, 34	eqbrtrrd 5173	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘(𝐺‘𝑧)) ≤ ((abs‘((𝐹‘𝑘)‘𝑧)) + (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧)))))
36		simplr 765	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → 𝑥 ∈ ℝ)
37		1re 11220	. . . . . . . . . . . . . . 15 ⊢ 1 ∈ ℝ
38	37	a1i 11	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → 1 ∈ ℝ)
39		simprrl 777	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥)
40	19, 26	abssubd 15406	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) = (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))))
41		simprrr 778	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1)
42	40, 41	eqbrtrd 5171	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) < 1)
43		ltle 11308	. . . . . . . . . . . . . . . 16 ⊢ (((abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) ∈ ℝ ∧ 1 ∈ ℝ) → ((abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) < 1 → (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) ≤ 1))
44	29, 37, 43	sylancl 584	. . . . . . . . . . . . . . 15 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → ((abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) < 1 → (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) ≤ 1))
45	42, 44	mpd 15	. . . . . . . . . . . . . 14 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧))) ≤ 1)
46	27, 29, 36, 38, 39, 45	le2addd 11839	. . . . . . . . . . . . 13 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → ((abs‘((𝐹‘𝑘)‘𝑧)) + (abs‘((𝐺‘𝑧) − ((𝐹‘𝑘)‘𝑧)))) ≤ (𝑥 + 1))
47	20, 30, 31, 35, 46	letrd 11377	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ (𝑧 ∈ 𝑆 ∧ ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1))) → (abs‘(𝐺‘𝑧)) ≤ (𝑥 + 1))
48	47	expr 455	. . . . . . . . . . 11 ⊢ ((((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) ∧ 𝑧 ∈ 𝑆) → (((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1) → (abs‘(𝐺‘𝑧)) ≤ (𝑥 + 1)))
49	48	ralimdva 3165	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) → (∀𝑧 ∈ 𝑆 ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1) → ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ (𝑥 + 1)))
50		brralrspcev 5209	. . . . . . . . . 10 ⊢ (((𝑥 + 1) ∈ ℝ ∧ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ (𝑥 + 1)) → ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑦)
51	14, 49, 50	syl6an 680	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) → (∀𝑧 ∈ 𝑆 ((abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1) → ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑦))
52	12, 51	biimtrrid 242	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) → ((∀𝑧 ∈ 𝑆 (abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 ∧ ∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1) → ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑦))
53	52	expd 414	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑘 ∈ 𝑍) ∧ 𝑥 ∈ ℝ) → (∀𝑧 ∈ 𝑆 (abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 → (∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1 → ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑦)))
54	53	rexlimdva 3153	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (∃𝑥 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘((𝐹‘𝑘)‘𝑧)) ≤ 𝑥 → (∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1 → ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑦)))
55	11, 54	mpd 15	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1 → ∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑦))
56		breq2 5153	. . . . . . 7 ⊢ (𝑦 = 𝑥 → ((abs‘(𝐺‘𝑧)) ≤ 𝑦 ↔ (abs‘(𝐺‘𝑧)) ≤ 𝑥))
57	56	ralbidv 3175	. . . . . 6 ⊢ (𝑦 = 𝑥 → (∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑦 ↔ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑥))
58	57	cbvrexvw 3233	. . . . 5 ⊢ (∃𝑦 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑦 ↔ ∃𝑥 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑥)
59	55, 58	imbitrdi 250	. . . 4 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1 → ∃𝑥 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑥))
60	59	rexlimdva 3153	. . 3 ⊢ (𝜑 → (∃𝑘 ∈ 𝑍 ∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1 → ∃𝑥 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑥))
61	10, 60	syl5 34	. 2 ⊢ (𝜑 → (∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ_≥‘𝑗)∀𝑧 ∈ 𝑆 (abs‘(((𝐹‘𝑘)‘𝑧) − (𝐺‘𝑧))) < 1 → ∃𝑥 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑥))
62	9, 61	mpd 15	1 ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑧 ∈ 𝑆 (abs‘(𝐺‘𝑧)) ≤ 𝑥)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 = wceq 1539 ∈ wcel 2104 ∀wral 3059 ∃wrex 3068 class class class wbr 5149 ⟶wf 6540 ‘cfv 6544 (class class class)co 7413 ↑_m cmap 8824 ℂcc 11112 ℝcr 11113 1c1 11115 + caddc 11117 < clt 11254 ≤ cle 11255 − cmin 11450 ℤcz 12564 ℤ_≥cuz 12828 ℝ⁺crp 12980 abscabs 15187 ⇝_𝑢culm 26122

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7729 ax-cnex 11170 ax-resscn 11171 ax-1cn 11172 ax-icn 11173 ax-addcl 11174 ax-addrcl 11175 ax-mulcl 11176 ax-mulrcl 11177 ax-mulcom 11178 ax-addass 11179 ax-mulass 11180 ax-distr 11181 ax-i2m1 11182 ax-1ne0 11183 ax-1rid 11184 ax-rnegex 11185 ax-rrecex 11186 ax-cnre 11187 ax-pre-lttri 11188 ax-pre-lttrn 11189 ax-pre-ltadd 11190 ax-pre-mulgt0 11191 ax-pre-sup 11192

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4910 df-iun 5000 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-riota 7369 df-ov 7416 df-oprab 7417 df-mpo 7418 df-om 7860 df-1st 7979 df-2nd 7980 df-frecs 8270 df-wrecs 8301 df-recs 8375 df-rdg 8414 df-er 8707 df-map 8826 df-pm 8827 df-en 8944 df-dom 8945 df-sdom 8946 df-sup 9441 df-pnf 11256 df-mnf 11257 df-xr 11258 df-ltxr 11259 df-le 11260 df-sub 11452 df-neg 11453 df-div 11878 df-nn 12219 df-2 12281 df-3 12282 df-n0 12479 df-z 12565 df-uz 12829 df-rp 12981 df-seq 13973 df-exp 14034 df-cj 15052 df-re 15053 df-im 15054 df-sqrt 15188 df-abs 15189 df-ulm 26123

This theorem is referenced by: mtestbdd 26151

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