Theorem itg2i1fseqle 25675

Description: Subject to the conditions coming from mbfi1fseq 25642, 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 6817	. . . . . . 7 ⊢ (𝑛 = 𝑀 → (𝑃‘𝑛) = (𝑃‘𝑀))
2	1	fveq1d 6819	. . . . . 6 ⊢ (𝑛 = 𝑀 → ((𝑃‘𝑛)‘𝑦) = ((𝑃‘𝑀)‘𝑦))
3		eqid 2730	. . . . . 6 ⊢ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) = (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))
4		fvex 6830	. . . . . 6 ⊢ ((𝑃‘𝑀)‘𝑦) ∈ V
5	2, 3, 4	fvmpt 6924	. . . . 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 12767	. . . . 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 6817	. . . . . . . . . 10 ⊢ (𝑥 = 𝑦 → ((𝑃‘𝑛)‘𝑥) = ((𝑃‘𝑛)‘𝑦))
11	10	mpteq2dv 5183	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) = (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)))
12		fveq2 6817	. . . . . . . . 9 ⊢ (𝑥 = 𝑦 → (𝐹‘𝑥) = (𝐹‘𝑦))
13	11, 12	breq12d 5102	. . . . . . . 8 ⊢ (𝑥 = 𝑦 → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑥)) ⇝ (𝐹‘𝑥) ↔ (𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦)) ⇝ (𝐹‘𝑦)))
14	13	rspccva 3574	. . . . . . 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 6817	. . . . . . . . . 10 ⊢ (𝑛 = 𝑘 → (𝑃‘𝑛) = (𝑃‘𝑘))
18	17	fveq1d 6819	. . . . . . . . 9 ⊢ (𝑛 = 𝑘 → ((𝑃‘𝑛)‘𝑦) = ((𝑃‘𝑘)‘𝑦))
19		fvex 6830	. . . . . . . . 9 ⊢ ((𝑃‘𝑘)‘𝑦) ∈ V
20	18, 3, 19	fvmpt 6924	. . . . . . . 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 7012	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → (𝑃‘𝑘) ∈ dom ∫1)
24		i1ff 25597	. . . . . . . . . 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 7012	. . . . . . . 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 2829	. . . . . 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 3067	. . . . . . . . . . . 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 7364	. . . . . . . . . . . . 13 ⊢ (𝑛 = 𝑘 → (𝑃‘(𝑛 + 1)) = (𝑃‘(𝑘 + 1)))
35	17, 34	breq12d 5102	. . . . . . . . . . . 12 ⊢ (𝑛 = 𝑘 → ((𝑃‘𝑛) ∘r ≤ (𝑃‘(𝑛 + 1)) ↔ (𝑃‘𝑘) ∘r ≤ (𝑃‘(𝑘 + 1))))
36	35	rspccva 3574	. . . . . . . . . . 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 6647	. . . . . . . . . . . 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 12129	. . . . . . . . . . . . 13 ⊢ (𝑘 ∈ ℕ → (𝑘 + 1) ∈ ℕ)
41		ffvelcdm 7009	. . . . . . . . . . . . 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 25597	. . . . . . . . . . . 12 ⊢ ((𝑃‘(𝑘 + 1)) ∈ dom ∫1 → (𝑃‘(𝑘 + 1)):ℝ⟶ℝ)
44		ffn 6647	. . . . . . . . . . . 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 11089	. . . . . . . . . . . 12 ⊢ ℝ ∈ V
47	46	a1i 11	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑘 ∈ ℕ) → ℝ ∈ V)
48		inidm 4175	. . . . . . . . . . 11 ⊢ (ℝ ∩ ℝ) = ℝ
49		eqidd 2731	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑘)‘𝑦) = ((𝑃‘𝑘)‘𝑦))
50		eqidd 2731	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑘 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘(𝑘 + 1))‘𝑦) = ((𝑃‘(𝑘 + 1))‘𝑦))
51	39, 45, 47, 47, 48, 49, 50	ofrfval 7615	. . . . . . . . . 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 3222	. . . . . . . 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 6817	. . . . . . . . . . 11 ⊢ (𝑛 = (𝑘 + 1) → (𝑃‘𝑛) = (𝑃‘(𝑘 + 1)))
56	55	fveq1d 6819	. . . . . . . . . 10 ⊢ (𝑛 = (𝑘 + 1) → ((𝑃‘𝑛)‘𝑦) = ((𝑃‘(𝑘 + 1))‘𝑦))
57		fvex 6830	. . . . . . . . . 10 ⊢ ((𝑃‘(𝑘 + 1))‘𝑦) ∈ V
58	56, 3, 57	fvmpt 6924	. . . . . . . . 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 5121	. . . . . 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 15561	. . . 4 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑛 ∈ ℕ ↦ ((𝑃‘𝑛)‘𝑦))‘𝑀) ≤ (𝐹‘𝑦))
64	6, 63	eqbrtrrd 5113	. . 3 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑀)‘𝑦) ≤ (𝐹‘𝑦))
65	64	ralrimiva 3122	. 2 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → ∀𝑦 ∈ ℝ ((𝑃‘𝑀)‘𝑦) ≤ (𝐹‘𝑦))
66	22	ffvelcdmda 7012	. . . 4 ⊢ ((𝜑 ∧ 𝑀 ∈ ℕ) → (𝑃‘𝑀) ∈ dom ∫1)
67		i1ff 25597	. . . 4 ⊢ ((𝑃‘𝑀) ∈ dom ∫1 → (𝑃‘𝑀):ℝ⟶ℝ)
68		ffn 6647	. . . 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 6648	. . . 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 2731	. . 3 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → ((𝑃‘𝑀)‘𝑦) = ((𝑃‘𝑀)‘𝑦))
75		eqidd 2731	. . 3 ⊢ (((𝜑 ∧ 𝑀 ∈ ℕ) ∧ 𝑦 ∈ ℝ) → (𝐹‘𝑦) = (𝐹‘𝑦))
76	69, 72, 73, 73, 48, 74, 75	ofrfval 7615	. 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 1541   ∈ wcel 2110  ∀wral 3045  Vcvv 3434   class class class wbr 5089   ↦ cmpt 5170  dom cdm 5614   Fn wfn 6472  ⟶wf 6473  ‘cfv 6477  (class class class)co 7341   ∘_r cofr 7604  ℝcr 10997  0cc0 10998  1c1 10999   + caddc 11001  +∞cpnf 11135   ≤ cle 11139  ℕcn 12117  [,)cico 13239   ⇝ cli 15383  MblFncmbf 25535  ∫₁citg1 25536  0_𝑝c0p 25590

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2112  ax-9 2120  ax-10 2143  ax-11 2159  ax-12 2179  ax-ext 2702  ax-rep 5215  ax-sep 5232  ax-nul 5242  ax-pow 5301  ax-pr 5368  ax-un 7663  ax-cnex 11054  ax-resscn 11055  ax-1cn 11056  ax-icn 11057  ax-addcl 11058  ax-addrcl 11059  ax-mulcl 11060  ax-mulrcl 11061  ax-mulcom 11062  ax-addass 11063  ax-mulass 11064  ax-distr 11065  ax-i2m1 11066  ax-1ne0 11067  ax-1rid 11068  ax-rnegex 11069  ax-rrecex 11070  ax-cnre 11071  ax-pre-lttri 11072  ax-pre-lttrn 11073  ax-pre-ltadd 11074  ax-pre-mulgt0 11075  ax-pre-sup 11076

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2067  df-mo 2534  df-eu 2563  df-clab 2709  df-cleq 2722  df-clel 2804  df-nfc 2879  df-ne 2927  df-nel 3031  df-ral 3046  df-rex 3055  df-rmo 3344  df-reu 3345  df-rab 3394  df-v 3436  df-sbc 3740  df-csb 3849  df-dif 3903  df-un 3905  df-in 3907  df-ss 3917  df-pss 3920  df-nul 4282  df-if 4474  df-pw 4550  df-sn 4575  df-pr 4577  df-op 4581  df-uni 4858  df-iun 4941  df-br 5090  df-opab 5152  df-mpt 5171  df-tr 5197  df-id 5509  df-eprel 5514  df-po 5522  df-so 5523  df-fr 5567  df-we 5569  df-xp 5620  df-rel 5621  df-cnv 5622  df-co 5623  df-dm 5624  df-rn 5625  df-res 5626  df-ima 5627  df-pred 6244  df-ord 6305  df-on 6306  df-lim 6307  df-suc 6308  df-iota 6433  df-fun 6479  df-fn 6480  df-f 6481  df-f1 6482  df-fo 6483  df-f1o 6484  df-fv 6485  df-riota 7298  df-ov 7344  df-oprab 7345  df-mpo 7346  df-ofr 7606  df-om 7792  df-1st 7916  df-2nd 7917  df-frecs 8206  df-wrecs 8237  df-recs 8286  df-rdg 8324  df-er 8617  df-pm 8748  df-en 8865  df-dom 8866  df-sdom 8867  df-sup 9321  df-inf 9322  df-pnf 11140  df-mnf 11141  df-xr 11142  df-ltxr 11143  df-le 11144  df-sub 11338  df-neg 11339  df-div 11767  df-nn 12118  df-2 12180  df-3 12181  df-n0 12374  df-z 12461  df-uz 12725  df-rp 12883  df-fz 13400  df-fl 13688  df-seq 13901  df-exp 13961  df-cj 14998  df-re 14999  df-im 15000  df-sqrt 15134  df-abs 15135  df-clim 15387  df-rlim 15388  df-sum 15586  df-itg1 25541

This theorem is referenced by:  itg2i1fseq  25676  itg2i1fseq3  25678  itg2addlem  25679