Theorem itg2i1fseqle 25671

Description: Subject to the conditions coming from mbfi1fseq 25638, the sequence of simple functions are all less than the target function 𝐹. (Contributed by Mario Carneiro, 17-Aug-2014.)

Hypotheses

Ref	Expression
itg2i1fseq.1	⊢ (𝜑 → 𝐹 ∈ MblFn)
itg2i1fseq.2	⊢ (𝜑 → 𝐹:ℝ⟶(0[,)+∞))
itg2i1fseq.3	⊢ (𝜑 → 𝑃:ℕ⟶dom ∫1)
itg2i1fseq.4	⊢ (𝜑 → ∀𝑛 ∈ ℕ (0𝑝 ∘r ≤ (𝑃‘𝑛) ∧ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1))))
itg2i1fseq.5	⊢ (𝜑 → ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥))

Assertion

Ref	Expression
itg2i1fseqle	⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → (𝑃‘𝑀) ∘r ≤ 𝐹)

Distinct variable groups:   𝑥,𝑛,𝐹   𝑛,𝑀   𝑃,𝑛,𝑥

Allowed substitution hints:   𝜑(𝑥,𝑛)   𝑀(𝑥)

Proof of Theorem itg2i1fseqle

Dummy variables 𝑘 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		fveq2 6826	. . . . . . 7 ⊢ (𝑛 = 𝑀 → (𝑃‘𝑛) = (𝑃‘𝑀))
2	1	fveq1d 6828	. . . . . 6 ⊢ (𝑛 = 𝑀 → ((𝑃‘𝑛)‘𝑦) = ((𝑃‘𝑀)‘𝑦))
3		eqid 2729	. . . . . 6 ⊢ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) = (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))
4		fvex 6839	. . . . . 6 ⊢ ((𝑃‘𝑀)‘𝑦) ∈ V
5	2, 3, 4	fvmpt 6934	. . . . 5 ⊢ (𝑀 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑀) = ((𝑃‘𝑀)‘𝑦))
6	5	ad2antlr 727	. . . 4 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑀) = ((𝑃‘𝑀)‘𝑦))
7		nnuz 12796	. . . . 5 ⊢ ℕ = (ℤ≥‘1)
8		simplr 768	. . . . 5 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → 𝑀 ∈ ℕ)
9		itg2i1fseq.5	. . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥))
10		fveq2 6826	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → ((𝑃‘𝑛)‘𝑥) = ((𝑃‘𝑛)‘𝑦))
11	10	mpteq2dv 5189	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) = (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)))
12		fveq2 6826	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → (𝐹‘𝑥) = (𝐹‘𝑦))
13	11, 12	breq12d 5108	. . . . . . . 8 ⊢ (𝑥 = 𝑦 → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥) ↔ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) ⇝ (𝐹‘𝑦)))
14	13	rspccva 3578	. . . . . . 7 ⊢ ((∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥) ∧ 𝑦 ∈ ℝ) → (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) ⇝ (𝐹‘𝑦))
15	9, 14	sylan 580	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ) → (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) ⇝ (𝐹‘𝑦))
16	15	adantlr 715	. . . . 5 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) ⇝ (𝐹‘𝑦))
17		fveq2 6826	. . . . . . . . . 10 ⊢ (𝑛 = 𝑘 → (𝑃‘𝑛) = (𝑃‘𝑘))
18	17	fveq1d 6828	. . . . . . . . 9 ⊢ (𝑛 = 𝑘 → ((𝑃‘𝑛)‘𝑦) = ((𝑃‘𝑘)‘𝑦))
19		fvex 6839	. . . . . . . . 9 ⊢ ((𝑃‘𝑘)‘𝑦) ∈ V
20	18, 3, 19	fvmpt 6934	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑘) = ((𝑃‘𝑘)‘𝑦))
21	20	adantl 481	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑘) = ((𝑃‘𝑘)‘𝑦))
22		itg2i1fseq.3	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑃:ℕ⟶dom ∫1)
23	22	ffvelcdmda 7022	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) ∈ dom ∫1)
24		i1ff 25593	. . . . . . . . . 10 ⊢ ((𝑃‘𝑘) ∈ dom ∫1 → (𝑃‘𝑘):ℝ⟶ℝ)
25	23, 24	syl 17	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘):ℝ⟶ℝ)
26	25	ffvelcdmda 7022	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑘)‘𝑦) ∈ ℝ)
27	26	an32s 652	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑃‘𝑘)‘𝑦) ∈ ℝ)
28	21, 27	eqeltrd 2828	. . . . . 6 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑘) ∈ ℝ)
29	28	adantllr 719	. . . . 5 ⊢ ((((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑘) ∈ ℝ)
30		itg2i1fseq.4	. . . . . . . . . . . 12 ⊢ (𝜑 → ∀𝑛 ∈ ℕ (0𝑝 ∘r ≤ (𝑃‘𝑛) ∧ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1))))
31		simpr 484	. . . . . . . . . . . . 13 ⊢ ((0𝑝 ∘r ≤ (𝑃‘𝑛) ∧ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1))) → (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)))
32	31	ralimi 3066	. . . . . . . . . . . 12 ⊢ (∀𝑛 ∈ ℕ (0𝑝 ∘r ≤ (𝑃‘𝑛) ∧ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1))) → ∀𝑛 ∈ ℕ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)))
33	30, 32	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → ∀𝑛 ∈ ℕ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)))
34		fvoveq1 7376	. . . . . . . . . . . . 13 ⊢ (𝑛 = 𝑘 → (𝑃‘(𝑛 + 1)) = (𝑃‘(𝑘 + 1)))
35	17, 34	breq12d 5108	. . . . . . . . . . . 12 ⊢ (𝑛 = 𝑘 → ((𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)) ↔ (𝑃‘𝑘) ∘r ≤ (𝑃‘(𝑘 + 1))))
36	35	rspccva 3578	. . . . . . . . . . 11 ⊢ ((∀𝑛 ∈ ℕ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)) ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) ∘r ≤ (𝑃‘(𝑘 + 1)))
37	33, 36	sylan 580	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) ∘r ≤ (𝑃‘(𝑘 + 1)))
38		ffn 6656	. . . . . . . . . . . 12 ⊢ ((𝑃‘𝑘):ℝ⟶ℝ → (𝑃‘𝑘) Fn ℝ)
39	23, 24, 38	3syl 18	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) Fn ℝ)
40		peano2nn 12158	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → (𝑘 + 1) ∈ ℕ)
41		ffvelcdm 7019	. . . . . . . . . . . . 13 ⊢ ((𝑃:ℕ⟶dom ∫1 ∧ (𝑘 + 1) ∈ ℕ) → (𝑃‘(𝑘 + 1)) ∈ dom ∫1)
42	22, 40, 41	syl2an 596	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘(𝑘 + 1)) ∈ dom ∫1)
43		i1ff 25593	. . . . . . . . . . . 12 ⊢ ((𝑃‘(𝑘 + 1)) ∈ dom ∫1 → (𝑃‘(𝑘 + 1)):ℝ⟶ℝ)
44		ffn 6656	. . . . . . . . . . . 12 ⊢ ((𝑃‘(𝑘 + 1)):ℝ⟶ℝ → (𝑃‘(𝑘 + 1)) Fn ℝ)
45	42, 43, 44	3syl 18	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘(𝑘 + 1)) Fn ℝ)
46		reex 11119	. . . . . . . . . . . 12 ⊢ ℝ ∈ V
47	46	a1i 11	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ℝ ∈ V)
48		inidm 4180	. . . . . . . . . . 11 ⊢ (ℝ ∩ ℝ) = ℝ
49		eqidd 2730	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑘)‘𝑦) = ((𝑃‘𝑘)‘𝑦))
50		eqidd 2730	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘(𝑘 + 1))‘𝑦) = ((𝑃‘(𝑘 + 1))‘𝑦))
51	39, 45, 47, 47, 48, 49, 50	ofrfval 7627	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑃‘𝑘) ∘r ≤ (𝑃‘(𝑘 + 1)) ↔ ∀𝑦 ∈ ℝ ((𝑃‘𝑘)‘𝑦) ≤ ((𝑃‘(𝑘 + 1))‘𝑦)))
52	37, 51	mpbid 232	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ∀𝑦 ∈ ℝ ((𝑃‘𝑘)‘𝑦) ≤ ((𝑃‘(𝑘 + 1))‘𝑦))
53	52	r19.21bi 3221	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑘)‘𝑦) ≤ ((𝑃‘(𝑘 + 1))‘𝑦))
54	53	an32s 652	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑃‘𝑘)‘𝑦) ≤ ((𝑃‘(𝑘 + 1))‘𝑦))
55		fveq2 6826	. . . . . . . . . . 11 ⊢ (𝑛 = (𝑘 + 1) → (𝑃‘𝑛) = (𝑃‘(𝑘 + 1)))
56	55	fveq1d 6828	. . . . . . . . . 10 ⊢ (𝑛 = (𝑘 + 1) → ((𝑃‘𝑛)‘𝑦) = ((𝑃‘(𝑘 + 1))‘𝑦))
57		fvex 6839	. . . . . . . . . 10 ⊢ ((𝑃‘(𝑘 + 1))‘𝑦) ∈ V
58	56, 3, 57	fvmpt 6934	. . . . . . . . 9 ⊢ ((𝑘 + 1) ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘(𝑘 + 1)) = ((𝑃‘(𝑘 + 1))‘𝑦))
59	40, 58	syl 17	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘(𝑘 + 1)) = ((𝑃‘(𝑘 + 1))‘𝑦))
60	59	adantl 481	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘(𝑘 + 1)) = ((𝑃‘(𝑘 + 1))‘𝑦))
61	54, 21, 60	3brtr4d 5127	. . . . . 6 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑘) ≤ ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘(𝑘 + 1)))
62	61	adantllr 719	. . . . 5 ⊢ ((((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑘) ≤ ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘(𝑘 + 1)))
63	7, 8, 16, 29, 62	climub 15587	. . . 4 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑀) ≤ (𝐹‘𝑦))
64	6, 63	eqbrtrrd 5119	. . 3 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑀)‘𝑦) ≤ (𝐹‘𝑦))
65	64	ralrimiva 3121	. 2 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → ∀𝑦 ∈ ℝ ((𝑃‘𝑀)‘𝑦) ≤ (𝐹‘𝑦))
66	22	ffvelcdmda 7022	. . . 4 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → (𝑃‘𝑀) ∈ dom ∫1)
67		i1ff 25593	. . . 4 ⊢ ((𝑃‘𝑀) ∈ dom ∫1 → (𝑃‘𝑀):ℝ⟶ℝ)
68		ffn 6656	. . . 4 ⊢ ((𝑃‘𝑀):ℝ⟶ℝ → (𝑃‘𝑀) Fn ℝ)
69	66, 67, 68	3syl 18	. . 3 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → (𝑃‘𝑀) Fn ℝ)
70		itg2i1fseq.2	. . . . 5 ⊢ (𝜑 → 𝐹:ℝ⟶(0[,)+∞))
71	70	ffnd 6657	. . . 4 ⊢ (𝜑 → 𝐹 Fn ℝ)
72	71	adantr 480	. . 3 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → 𝐹 Fn ℝ)
73	46	a1i 11	. . 3 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → ℝ ∈ V)
74		eqidd 2730	. . 3 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑀)‘𝑦) = ((𝑃‘𝑀)‘𝑦))
75		eqidd 2730	. . 3 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑦) = (𝐹‘𝑦))
76	69, 72, 73, 73, 48, 74, 75	ofrfval 7627	. 2 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → ((𝑃‘𝑀) ∘r ≤ 𝐹 ↔ ∀𝑦 ∈ ℝ ((𝑃‘𝑀)‘𝑦) ≤ (𝐹‘𝑦)))
77	65, 76	mpbird 257	1 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → (𝑃‘𝑀) ∘r ≤ 𝐹)

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1540   ∈ wcel 2109  ∀wral 3044  Vcvv 3438   class class class wbr 5095   ↦ cmpt 5176  dom cdm 5623   Fn wfn 6481  ⟶wf 6482  ‘cfv 6486  (class class class)co 7353   ∘_r cofr 7616  ℝcr 11027  0cc0 11028  1c1 11029   + caddc 11031  +∞cpnf 11165   ≤ cle 11169  ℕcn 12146  [,)cico 13268   ⇝ cli 15409  MblFncmbf 25531  ∫₁citg1 25532  0_𝑝c0p 25586

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 1910  ax-6 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-rep 5221  ax-sep 5238  ax-nul 5248  ax-pow 5307  ax-pr 5374  ax-un 7675  ax-cnex 11084  ax-resscn 11085  ax-1cn 11086  ax-icn 11087  ax-addcl 11088  ax-addrcl 11089  ax-mulcl 11090  ax-mulrcl 11091  ax-mulcom 11092  ax-addass 11093  ax-mulass 11094  ax-distr 11095  ax-i2m1 11096  ax-1ne0 11097  ax-1rid 11098  ax-rnegex 11099  ax-rrecex 11100  ax-cnre 11101  ax-pre-lttri 11102  ax-pre-lttrn 11103  ax-pre-ltadd 11104  ax-pre-mulgt0 11105  ax-pre-sup 11106

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-nel 3030  df-ral 3045  df-rex 3054  df-rmo 3345  df-reu 3346  df-rab 3397  df-v 3440  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-pss 3925  df-nul 4287  df-if 4479  df-pw 4555  df-sn 4580  df-pr 4582  df-op 4586  df-uni 4862  df-iun 4946  df-br 5096  df-opab 5158  df-mpt 5177  df-tr 5203  df-id 5518  df-eprel 5523  df-po 5531  df-so 5532  df-fr 5576  df-we 5578  df-xp 5629  df-rel 5630  df-cnv 5631  df-co 5632  df-dm 5633  df-rn 5634  df-res 5635  df-ima 5636  df-pred 6253  df-ord 6314  df-on 6315  df-lim 6316  df-suc 6317  df-iota 6442  df-fun 6488  df-fn 6489  df-f 6490  df-f1 6491  df-fo 6492  df-f1o 6493  df-fv 6494  df-riota 7310  df-ov 7356  df-oprab 7357  df-mpo 7358  df-ofr 7618  df-om 7807  df-1st 7931  df-2nd 7932  df-frecs 8221  df-wrecs 8252  df-recs 8301  df-rdg 8339  df-er 8632  df-pm 8763  df-en 8880  df-dom 8881  df-sdom 8882  df-sup 9351  df-inf 9352  df-pnf 11170  df-mnf 11171  df-xr 11172  df-ltxr 11173  df-le 11174  df-sub 11367  df-neg 11368  df-div 11796  df-nn 12147  df-2 12209  df-3 12210  df-n0 12403  df-z 12490  df-uz 12754  df-rp 12912  df-fz 13429  df-fl 13714  df-seq 13927  df-exp 13987  df-cj 15024  df-re 15025  df-im 15026  df-sqrt 15160  df-abs 15161  df-clim 15413  df-rlim 15414  df-sum 15612  df-itg1 25537

This theorem is referenced by:  itg2i1fseq  25672  itg2i1fseq3  25674  itg2addlem  25675