o1dif - Metamath Proof Explorer

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Theorem o1dif 14208

Description: If the difference of two functions is eventually bounded, eventual boundedness of either one implies the other. (Contributed by Mario Carneiro, 26-May-2016.)

**Hypotheses**
Ref	Expression
o1dif.1	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℂ)
o1dif.2	⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ ℂ)
o1dif.3	⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∈ 𝑂(1))

**Assertion**
Ref	Expression
o1dif	⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1) ↔ (𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1)))

Distinct variable groups: 𝑥,𝐴 𝜑,𝑥 Allowed substitution hints: 𝐵(𝑥) 𝐶(𝑥)

**Proof of Theorem o1dif**
Step	Hyp	Ref	Expression
1		o1dif.3	. . . 4 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∈ 𝑂(1))
2		o1sub 14194	. . . . 5 ⊢ (((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1) ∧ (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∈ 𝑂(1)) → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∘_𝑓 − (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶))) ∈ 𝑂(1))
3	2	expcom 450	. . . 4 ⊢ ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∈ 𝑂(1) → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1) → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∘_𝑓 − (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶))) ∈ 𝑂(1)))
4	1, 3	syl 17	. . 3 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1) → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∘_𝑓 − (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶))) ∈ 𝑂(1)))
5		o1dif.1	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐵 ∈ ℂ)
6		o1dif.2	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → 𝐶 ∈ ℂ)
7	5, 6	subcld 10271	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐵 − 𝐶) ∈ ℂ)
8	7	ralrimiva 2949	. . . . . . . . 9 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 (𝐵 − 𝐶) ∈ ℂ)
9		dmmptg 5549	. . . . . . . . 9 ⊢ (∀𝑥 ∈ 𝐴 (𝐵 − 𝐶) ∈ ℂ → dom (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) = 𝐴)
10	8, 9	syl 17	. . . . . . . 8 ⊢ (𝜑 → dom (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) = 𝐴)
11		o1dm 14109	. . . . . . . . 9 ⊢ ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∈ 𝑂(1) → dom (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ⊆ ℝ)
12	1, 11	syl 17	. . . . . . . 8 ⊢ (𝜑 → dom (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ⊆ ℝ)
13	10, 12	eqsstr3d 3603	. . . . . . 7 ⊢ (𝜑 → 𝐴 ⊆ ℝ)
14		reex 9906	. . . . . . . 8 ⊢ ℝ ∈ V
15	14	ssex 4730	. . . . . . 7 ⊢ (𝐴 ⊆ ℝ → 𝐴 ∈ V)
16	13, 15	syl 17	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ V)
17		eqidd 2611	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵))
18		eqidd 2611	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) = (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)))
19	16, 5, 7, 17, 18	offval2 6812	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∘_𝑓 − (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶))) = (𝑥 ∈ 𝐴 ↦ (𝐵 − (𝐵 − 𝐶))))
20	5, 6	nncand 10276	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐵 − (𝐵 − 𝐶)) = 𝐶)
21	20	mpteq2dva 4672	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ (𝐵 − (𝐵 − 𝐶))) = (𝑥 ∈ 𝐴 ↦ 𝐶))
22	19, 21	eqtrd 2644	. . . 4 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∘_𝑓 − (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶))) = (𝑥 ∈ 𝐴 ↦ 𝐶))
23	22	eleq1d 2672	. . 3 ⊢ (𝜑 → (((𝑥 ∈ 𝐴 ↦ 𝐵) ∘_𝑓 − (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶))) ∈ 𝑂(1) ↔ (𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1)))
24	4, 23	sylibd 228	. 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1) → (𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1)))
25		o1add 14192	. . . . 5 ⊢ (((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∈ 𝑂(1) ∧ (𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1)) → ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∘_𝑓 + (𝑥 ∈ 𝐴 ↦ 𝐶)) ∈ 𝑂(1))
26	25	ex 449	. . . 4 ⊢ ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∈ 𝑂(1) → ((𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1) → ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∘_𝑓 + (𝑥 ∈ 𝐴 ↦ 𝐶)) ∈ 𝑂(1)))
27	1, 26	syl 17	. . 3 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1) → ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∘_𝑓 + (𝑥 ∈ 𝐴 ↦ 𝐶)) ∈ 𝑂(1)))
28		eqidd 2611	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐶) = (𝑥 ∈ 𝐴 ↦ 𝐶))
29	16, 7, 6, 18, 28	offval2 6812	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∘_𝑓 + (𝑥 ∈ 𝐴 ↦ 𝐶)) = (𝑥 ∈ 𝐴 ↦ ((𝐵 − 𝐶) + 𝐶)))
30	5, 6	npcand 10275	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ((𝐵 − 𝐶) + 𝐶) = 𝐵)
31	30	mpteq2dva 4672	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ ((𝐵 − 𝐶) + 𝐶)) = (𝑥 ∈ 𝐴 ↦ 𝐵))
32	29, 31	eqtrd 2644	. . . 4 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∘_𝑓 + (𝑥 ∈ 𝐴 ↦ 𝐶)) = (𝑥 ∈ 𝐴 ↦ 𝐵))
33	32	eleq1d 2672	. . 3 ⊢ (𝜑 → (((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∘_𝑓 + (𝑥 ∈ 𝐴 ↦ 𝐶)) ∈ 𝑂(1) ↔ (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1)))
34	27, 33	sylibd 228	. 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1) → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1)))
35	24, 34	impbid 201	1 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1) ↔ (𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 = wceq 1475 ∈ wcel 1977 ∀wral 2896 Vcvv 3173 ⊆ wss 3540 ↦ cmpt 4643 dom cdm 5038 (class class class)co 6549 ∘_𝑓 cof 6793 ℂcc 9813 ℝcr 9814 + caddc 9818 − cmin 10145 𝑂(1)co1 14065

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893

This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-of 6795 df-om 6958 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-er 7629 df-pm 7747 df-en 7842 df-dom 7843 df-sdom 7844 df-sup 8231 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-div 10564 df-nn 10898 df-2 10956 df-3 10957 df-n0 11170 df-z 11255 df-uz 11564 df-rp 11709 df-ico 12052 df-seq 12664 df-exp 12723 df-cj 13687 df-re 13688 df-im 13689 df-sqrt 13823 df-abs 13824 df-o1 14069

This theorem is referenced by: dchrmusum2 24983 dchrvmasumiflem2 24991 dchrisum0lem2a 25006 dchrisum0lem2 25007 rplogsum 25016 dirith2 25017 mulogsumlem 25020 mulogsum 25021 vmalogdivsum2 25027 vmalogdivsum 25028 2vmadivsumlem 25029 selberg3lem1 25046 selberg4lem1 25049 selberg4 25050 pntrlog2bndlem4 25069

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