Theorem itg2i1fseqle 24349

Description: Subject to the conditions coming from mbfi1fseq 24316, 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 6664	. . . . . . 7 ⊢ (𝑛 = 𝑀 → (𝑃‘𝑛) = (𝑃‘𝑀))
2	1	fveq1d 6666	. . . . . 6 ⊢ (𝑛 = 𝑀 → ((𝑃‘𝑛)‘𝑦) = ((𝑃‘𝑀)‘𝑦))
3		eqid 2821	. . . . . 6 ⊢ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) = (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))
4		fvex 6677	. . . . . 6 ⊢ ((𝑃‘𝑀)‘𝑦) ∈ V
5	2, 3, 4	fvmpt 6762	. . . . 5 ⊢ (𝑀 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑀) = ((𝑃‘𝑀)‘𝑦))
6	5	ad2antlr 725	. . . 4 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑀) = ((𝑃‘𝑀)‘𝑦))
7		nnuz 12275	. . . . 5 ⊢ ℕ = (ℤ≥‘1)
8		simplr 767	. . . . 5 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → 𝑀 ∈ ℕ)
9		itg2i1fseq.5	. . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥))
10		fveq2 6664	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → ((𝑃‘𝑛)‘𝑥) = ((𝑃‘𝑛)‘𝑦))
11	10	mpteq2dv 5154	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) = (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)))
12		fveq2 6664	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → (𝐹‘𝑥) = (𝐹‘𝑦))
13	11, 12	breq12d 5071	. . . . . . . 8 ⊢ (𝑥 = 𝑦 → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥) ↔ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) ⇝ (𝐹‘𝑦)))
14	13	rspccva 3621	. . . . . . 7 ⊢ ((∀𝑥 ∈ ℝ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥) ∧ 𝑦 ∈ ℝ) → (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) ⇝ (𝐹‘𝑦))
15	9, 14	sylan 582	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ) → (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) ⇝ (𝐹‘𝑦))
16	15	adantlr 713	. . . . 5 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) ⇝ (𝐹‘𝑦))
17		fveq2 6664	. . . . . . . . . 10 ⊢ (𝑛 = 𝑘 → (𝑃‘𝑛) = (𝑃‘𝑘))
18	17	fveq1d 6666	. . . . . . . . 9 ⊢ (𝑛 = 𝑘 → ((𝑃‘𝑛)‘𝑦) = ((𝑃‘𝑘)‘𝑦))
19		fvex 6677	. . . . . . . . 9 ⊢ ((𝑃‘𝑘)‘𝑦) ∈ V
20	18, 3, 19	fvmpt 6762	. . . . . . . 8 ⊢ (𝑘 ∈ ℕ → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑘) = ((𝑃‘𝑘)‘𝑦))
21	20	adantl 484	. . . . . . 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	ffvelrnda 6845	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) ∈ dom ∫1)
24		i1ff 24271	. . . . . . . . . 10 ⊢ ((𝑃‘𝑘) ∈ dom ∫1 → (𝑃‘𝑘):ℝ⟶ℝ)
25	23, 24	syl 17	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘):ℝ⟶ℝ)
26	25	ffvelrnda 6845	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑘)‘𝑦) ∈ ℝ)
27	26	an32s 650	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑃‘𝑘)‘𝑦) ∈ ℝ)
28	21, 27	eqeltrd 2913	. . . . . 6 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑘) ∈ ℝ)
29	28	adantllr 717	. . . . 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 487	. . . . . . . . . . . . 13 ⊢ ((0𝑝 ∘r ≤ (𝑃‘𝑛) ∧ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1))) → (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)))
32	31	ralimi 3160	. . . . . . . . . . . 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 7173	. . . . . . . . . . . . 13 ⊢ (𝑛 = 𝑘 → (𝑃‘(𝑛 + 1)) = (𝑃‘(𝑘 + 1)))
35	17, 34	breq12d 5071	. . . . . . . . . . . 12 ⊢ (𝑛 = 𝑘 → ((𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)) ↔ (𝑃‘𝑘) ∘r ≤ (𝑃‘(𝑘 + 1))))
36	35	rspccva 3621	. . . . . . . . . . 11 ⊢ ((∀𝑛 ∈ ℕ (𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)) ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) ∘r ≤ (𝑃‘(𝑘 + 1)))
37	33, 36	sylan 582	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) ∘r ≤ (𝑃‘(𝑘 + 1)))
38		ffn 6508	. . . . . . . . . . . 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 11644	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → (𝑘 + 1) ∈ ℕ)
41		ffvelrn 6843	. . . . . . . . . . . . 13 ⊢ ((𝑃:ℕ⟶dom ∫1 ∧ (𝑘 + 1) ∈ ℕ) → (𝑃‘(𝑘 + 1)) ∈ dom ∫1)
42	22, 40, 41	syl2an 597	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘(𝑘 + 1)) ∈ dom ∫1)
43		i1ff 24271	. . . . . . . . . . . 12 ⊢ ((𝑃‘(𝑘 + 1)) ∈ dom ∫1 → (𝑃‘(𝑘 + 1)):ℝ⟶ℝ)
44		ffn 6508	. . . . . . . . . . . 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 10622	. . . . . . . . . . . 12 ⊢ ℝ ∈ V
47	46	a1i 11	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ℝ ∈ V)
48		inidm 4194	. . . . . . . . . . 11 ⊢ (ℝ ∩ ℝ) = ℝ
49		eqidd 2822	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑘)‘𝑦) = ((𝑃‘𝑘)‘𝑦))
50		eqidd 2822	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘(𝑘 + 1))‘𝑦) = ((𝑃‘(𝑘 + 1))‘𝑦))
51	39, 45, 47, 47, 48, 49, 50	ofrfval 7411	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ((𝑃‘𝑘) ∘r ≤ (𝑃‘(𝑘 + 1)) ↔ ∀𝑦 ∈ ℝ ((𝑃‘𝑘)‘𝑦) ≤ ((𝑃‘(𝑘 + 1))‘𝑦)))
52	37, 51	mpbid 234	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ∀𝑦 ∈ ℝ ((𝑃‘𝑘)‘𝑦) ≤ ((𝑃‘(𝑘 + 1))‘𝑦))
53	52	r19.21bi 3208	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑘)‘𝑦) ≤ ((𝑃‘(𝑘 + 1))‘𝑦))
54	53	an32s 650	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑃‘𝑘)‘𝑦) ≤ ((𝑃‘(𝑘 + 1))‘𝑦))
55		fveq2 6664	. . . . . . . . . . 11 ⊢ (𝑛 = (𝑘 + 1) → (𝑃‘𝑛) = (𝑃‘(𝑘 + 1)))
56	55	fveq1d 6666	. . . . . . . . . 10 ⊢ (𝑛 = (𝑘 + 1) → ((𝑃‘𝑛)‘𝑦) = ((𝑃‘(𝑘 + 1))‘𝑦))
57		fvex 6677	. . . . . . . . . 10 ⊢ ((𝑃‘(𝑘 + 1))‘𝑦) ∈ V
58	56, 3, 57	fvmpt 6762	. . . . . . . . 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 484	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘(𝑘 + 1)) = ((𝑃‘(𝑘 + 1))‘𝑦))
61	54, 21, 60	3brtr4d 5090	. . . . . 6 ⊢ (((𝜑 ∧ 𝑦 ∈ ℝ) ∧ 𝑘 ∈ ℕ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑘) ≤ ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘(𝑘 + 1)))
62	61	adantllr 717	. . . . 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 15012	. . . 4 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑀) ≤ (𝐹‘𝑦))
64	6, 63	eqbrtrrd 5082	. . 3 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑀)‘𝑦) ≤ (𝐹‘𝑦))
65	64	ralrimiva 3182	. 2 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → ∀𝑦 ∈ ℝ ((𝑃‘𝑀)‘𝑦) ≤ (𝐹‘𝑦))
66	22	ffvelrnda 6845	. . . 4 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → (𝑃‘𝑀) ∈ dom ∫1)
67		i1ff 24271	. . . 4 ⊢ ((𝑃‘𝑀) ∈ dom ∫1 → (𝑃‘𝑀):ℝ⟶ℝ)
68		ffn 6508	. . . 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 6509	. . . 4 ⊢ (𝜑 → 𝐹 Fn ℝ)
72	71	adantr 483	. . 3 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → 𝐹 Fn ℝ)
73	46	a1i 11	. . 3 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → ℝ ∈ V)
74		eqidd 2822	. . 3 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑀)‘𝑦) = ((𝑃‘𝑀)‘𝑦))
75		eqidd 2822	. . 3 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑦) = (𝐹‘𝑦))
76	69, 72, 73, 73, 48, 74, 75	ofrfval 7411	. 2 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → ((𝑃‘𝑀) ∘r ≤ 𝐹 ↔ ∀𝑦 ∈ ℝ ((𝑃‘𝑀)‘𝑦) ≤ (𝐹‘𝑦)))
77	65, 76	mpbird 259	1 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → (𝑃‘𝑀) ∘r ≤ 𝐹)

Syntax hints:   → wi 4   ∧ wa 398   = wceq 1533   ∈ wcel 2110  ∀wral 3138  Vcvv 3494   class class class wbr 5058   ↦ cmpt 5138  dom cdm 5549   Fn wfn 6344  ⟶wf 6345  ‘cfv 6349  (class class class)co 7150   ∘_r cofr 7402  ℝcr 10530  0cc0 10531  1c1 10532   + caddc 10534  +∞cpnf 10666   ≤ cle 10670  ℕcn 11632  [,)cico 12734   ⇝ cli 14835  MblFncmbf 24209  ∫₁citg1 24210  0_𝑝c0p 24264

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2157  ax-12 2173  ax-ext 2793  ax-rep 5182  ax-sep 5195  ax-nul 5202  ax-pow 5258  ax-pr 5321  ax-un 7455  ax-cnex 10587  ax-resscn 10588  ax-1cn 10589  ax-icn 10590  ax-addcl 10591  ax-addrcl 10592  ax-mulcl 10593  ax-mulrcl 10594  ax-mulcom 10595  ax-addass 10596  ax-mulass 10597  ax-distr 10598  ax-i2m1 10599  ax-1ne0 10600  ax-1rid 10601  ax-rnegex 10602  ax-rrecex 10603  ax-cnre 10604  ax-pre-lttri 10605  ax-pre-lttrn 10606  ax-pre-ltadd 10607  ax-pre-mulgt0 10608  ax-pre-sup 10609

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-nel 3124  df-ral 3143  df-rex 3144  df-reu 3145  df-rmo 3146  df-rab 3147  df-v 3496  df-sbc 3772  df-csb 3883  df-dif 3938  df-un 3940  df-in 3942  df-ss 3951  df-pss 3953  df-nul 4291  df-if 4467  df-pw 4540  df-sn 4561  df-pr 4563  df-tp 4565  df-op 4567  df-uni 4832  df-iun 4913  df-br 5059  df-opab 5121  df-mpt 5139  df-tr 5165  df-id 5454  df-eprel 5459  df-po 5468  df-so 5469  df-fr 5508  df-we 5510  df-xp 5555  df-rel 5556  df-cnv 5557  df-co 5558  df-dm 5559  df-rn 5560  df-res 5561  df-ima 5562  df-pred 6142  df-ord 6188  df-on 6189  df-lim 6190  df-suc 6191  df-iota 6308  df-fun 6351  df-fn 6352  df-f 6353  df-f1 6354  df-fo 6355  df-f1o 6356  df-fv 6357  df-riota 7108  df-ov 7153  df-oprab 7154  df-mpo 7155  df-ofr 7404  df-om 7575  df-1st 7683  df-2nd 7684  df-wrecs 7941  df-recs 8002  df-rdg 8040  df-er 8283  df-pm 8403  df-en 8504  df-dom 8505  df-sdom 8506  df-sup 8900  df-inf 8901  df-pnf 10671  df-mnf 10672  df-xr 10673  df-ltxr 10674  df-le 10675  df-sub 10866  df-neg 10867  df-div 11292  df-nn 11633  df-2 11694  df-3 11695  df-n0 11892  df-z 11976  df-uz 12238  df-rp 12384  df-fz 12887  df-fl 13156  df-seq 13364  df-exp 13424  df-cj 14452  df-re 14453  df-im 14454  df-sqrt 14588  df-abs 14589  df-clim 14839  df-rlim 14840  df-sum 15037  df-itg1 24215

This theorem is referenced by:  itg2i1fseq  24350  itg2i1fseq3  24352  itg2addlem  24353