o1dif - Metamath Proof Explorer

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Theorem o1dif 14567

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 14553	. . . . 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 398	. . . 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 10593	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐵 − 𝐶) ∈ ℂ)
8	7	ralrimiva 3114	. . . . . . . . 9 ⊢ (𝜑 → ∀𝑥 ∈ 𝐴 (𝐵 − 𝐶) ∈ ℂ)
9		dmmptg 5776	. . . . . . . . 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 14468	. . . . . . . . 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 3787	. . . . . . 7 ⊢ (𝜑 → 𝐴 ⊆ ℝ)
14		reex 10228	. . . . . . . 8 ⊢ ℝ ∈ V
15	14	ssex 4933	. . . . . . 7 ⊢ (𝐴 ⊆ ℝ → 𝐴 ∈ V)
16	13, 15	syl 17	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ V)
17		eqidd 2771	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐵) = (𝑥 ∈ 𝐴 ↦ 𝐵))
18		eqidd 2771	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) = (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)))
19	16, 5, 7, 17, 18	offval2 7060	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∘_𝑓 − (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶))) = (𝑥 ∈ 𝐴 ↦ (𝐵 − (𝐵 − 𝐶))))
20	5, 6	nncand 10598	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → (𝐵 − (𝐵 − 𝐶)) = 𝐶)
21	20	mpteq2dva 4876	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ (𝐵 − (𝐵 − 𝐶))) = (𝑥 ∈ 𝐴 ↦ 𝐶))
22	19, 21	eqtrd 2804	. . . 4 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∘_𝑓 − (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶))) = (𝑥 ∈ 𝐴 ↦ 𝐶))
23	22	eleq1d 2834	. . 3 ⊢ (𝜑 → (((𝑥 ∈ 𝐴 ↦ 𝐵) ∘_𝑓 − (𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶))) ∈ 𝑂(1) ↔ (𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1)))
24	4, 23	sylibd 229	. 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1) → (𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1)))
25		o1add 14551	. . . . 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 397	. . . 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 2771	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ 𝐶) = (𝑥 ∈ 𝐴 ↦ 𝐶))
29	16, 7, 6, 18, 28	offval2 7060	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∘_𝑓 + (𝑥 ∈ 𝐴 ↦ 𝐶)) = (𝑥 ∈ 𝐴 ↦ ((𝐵 − 𝐶) + 𝐶)))
30	5, 6	npcand 10597	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝐴) → ((𝐵 − 𝐶) + 𝐶) = 𝐵)
31	30	mpteq2dva 4876	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ 𝐴 ↦ ((𝐵 − 𝐶) + 𝐶)) = (𝑥 ∈ 𝐴 ↦ 𝐵))
32	29, 31	eqtrd 2804	. . . 4 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∘_𝑓 + (𝑥 ∈ 𝐴 ↦ 𝐶)) = (𝑥 ∈ 𝐴 ↦ 𝐵))
33	32	eleq1d 2834	. . 3 ⊢ (𝜑 → (((𝑥 ∈ 𝐴 ↦ (𝐵 − 𝐶)) ∘_𝑓 + (𝑥 ∈ 𝐴 ↦ 𝐶)) ∈ 𝑂(1) ↔ (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1)))
34	27, 33	sylibd 229	. 2 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1) → (𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1)))
35	24, 34	impbid 202	1 ⊢ (𝜑 → ((𝑥 ∈ 𝐴 ↦ 𝐵) ∈ 𝑂(1) ↔ (𝑥 ∈ 𝐴 ↦ 𝐶) ∈ 𝑂(1)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 196 ∧ wa 382 = wceq 1630 ∈ wcel 2144 ∀wral 3060 Vcvv 3349 ⊆ wss 3721 ↦ cmpt 4861 dom cdm 5249 (class class class)co 6792 ∘_𝑓 cof 7041 ℂcc 10135 ℝcr 10136 + caddc 10140 − cmin 10467 𝑂(1)co1 14424

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1869 ax-4 1884 ax-5 1990 ax-6 2056 ax-7 2092 ax-8 2146 ax-9 2153 ax-10 2173 ax-11 2189 ax-12 2202 ax-13 2407 ax-ext 2750 ax-rep 4902 ax-sep 4912 ax-nul 4920 ax-pow 4971 ax-pr 5034 ax-un 7095 ax-cnex 10193 ax-resscn 10194 ax-1cn 10195 ax-icn 10196 ax-addcl 10197 ax-addrcl 10198 ax-mulcl 10199 ax-mulrcl 10200 ax-mulcom 10201 ax-addass 10202 ax-mulass 10203 ax-distr 10204 ax-i2m1 10205 ax-1ne0 10206 ax-1rid 10207 ax-rnegex 10208 ax-rrecex 10209 ax-cnre 10210 ax-pre-lttri 10211 ax-pre-lttrn 10212 ax-pre-ltadd 10213 ax-pre-mulgt0 10214 ax-pre-sup 10215

This theorem depends on definitions: df-bi 197 df-an 383 df-or 827 df-3or 1071 df-3an 1072 df-tru 1633 df-ex 1852 df-nf 1857 df-sb 2049 df-eu 2621 df-mo 2622 df-clab 2757 df-cleq 2763 df-clel 2766 df-nfc 2901 df-ne 2943 df-nel 3046 df-ral 3065 df-rex 3066 df-reu 3067 df-rmo 3068 df-rab 3069 df-v 3351 df-sbc 3586 df-csb 3681 df-dif 3724 df-un 3726 df-in 3728 df-ss 3735 df-pss 3737 df-nul 4062 df-if 4224 df-pw 4297 df-sn 4315 df-pr 4317 df-tp 4319 df-op 4321 df-uni 4573 df-iun 4654 df-br 4785 df-opab 4845 df-mpt 4862 df-tr 4885 df-id 5157 df-eprel 5162 df-po 5170 df-so 5171 df-fr 5208 df-we 5210 df-xp 5255 df-rel 5256 df-cnv 5257 df-co 5258 df-dm 5259 df-rn 5260 df-res 5261 df-ima 5262 df-pred 5823 df-ord 5869 df-on 5870 df-lim 5871 df-suc 5872 df-iota 5994 df-fun 6033 df-fn 6034 df-f 6035 df-f1 6036 df-fo 6037 df-f1o 6038 df-fv 6039 df-riota 6753 df-ov 6795 df-oprab 6796 df-mpt2 6797 df-of 7043 df-om 7212 df-2nd 7315 df-wrecs 7558 df-recs 7620 df-rdg 7658 df-er 7895 df-pm 8011 df-en 8109 df-dom 8110 df-sdom 8111 df-sup 8503 df-pnf 10277 df-mnf 10278 df-xr 10279 df-ltxr 10280 df-le 10281 df-sub 10469 df-neg 10470 df-div 10886 df-nn 11222 df-2 11280 df-3 11281 df-n0 11494 df-z 11579 df-uz 11888 df-rp 12035 df-ico 12385 df-seq 13008 df-exp 13067 df-cj 14046 df-re 14047 df-im 14048 df-sqrt 14182 df-abs 14183 df-o1 14428

This theorem is referenced by: dchrmusum2 25403 dchrvmasumiflem2 25411 dchrisum0lem2a 25426 dchrisum0lem2 25427 rplogsum 25436 dirith2 25437 mulogsumlem 25440 mulogsum 25441 vmalogdivsum2 25447 vmalogdivsum 25448 2vmadivsumlem 25449 selberg3lem1 25466 selberg4lem1 25469 selberg4 25470 pntrlog2bndlem4 25489

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