Full measure of a set of singular continuous measures
On the space of structurally similar measures, we construct a nontrivial measure m such that the subclass of all purely singular continuous measures is a set of full m-measure.
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| Datum: | 2009 |
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| Sprache: | Ukrainisch Englisch |
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Institute of Mathematics, NAS of Ukraine
2009
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Ukrains’kyi Matematychnyi Zhurnal| _version_ | 1860509016424185856 |
|---|---|
| author | Koshmanenko, V. D. Кошманенко, В. Д. |
| author_facet | Koshmanenko, V. D. Кошманенко, В. Д. |
| author_sort | Koshmanenko, V. D. |
| baseUrl_str | https://umj.imath.kiev.ua/index.php/umj/oai |
| collection | OJS |
| datestamp_date | 2020-03-18T19:43:07Z |
| description | On the space of structurally similar measures, we construct a nontrivial measure m such that the subclass of all purely singular continuous measures is a set of full m-measure. |
| first_indexed | 2026-03-24T02:34:24Z |
| format | Article |
| fulltext |
UDK 517.9
V. D. Koßmanenko (In-t matematyky NAN Ukra]ny, Ky]v)
POVNA MIRA MNOÛYNY
SYNHULQRNO NEPERERVNYX MIR
∗∗∗∗
On the space of similarly structured measures, we construct a nontrivial measure m such that a subclass
of all purely singularly continuous measures is a set of the full m-measure.
Na prostranstve strukturno-podobn¥x mer postroena netryvyal\naq mera m takaq, çto pod-
klass vsex çysto synhulqrno neprer¥vn¥x mer qvlqetsq mnoΩestvom polnoj m-mer¥.
1. Vstup. U 1981 roci rumuns\kyj matematyk Zamfiresku [1] pokazav, wo pere-
vaΩna bil\ßist\ monotonnyx funkcij magt\ synhulqrno neperervnu poxidnu.
Evristyçno ce oznaça[, wo zvyçajni funkci] (prosti ta absolgtno neperervni),
qki vidpovidagt\ toçkovym ta absolgtno neperervnym miram, skladagt\ ekzo-
tyçno malu pidmnoΩynu perßo] katehori] Bera.
Analohiçnyj rezul\tat otrymano v roboti Sajmona [2] (dyv. takoΩ [3, 4]), de
pokazano, wo v pevnomu sensi praktyçno vsi linijni operatory u hil\bertovomu
prostori magt\ synhulqrno neperervnyj spektr i lyße deqki � toçkovyj abo
absolgtno neperervnyj: “Operators with singular continuous spectrum are generic
in the Baire sense”.
U zv�qzku iz zastosuvannqmy ponqttq spektral\no] miry v teori] zburen\ z
fraktal\nym potencialom [5] ta v teori] konfliktiv [6, 7], vynykla potreba
oxarakteryzuvaty toçniße �vahu� mnoΩyny synhulqrno neperervnyx mir, qki
zustriçagt\sq v cyx teoriqx.
U cij statti na prostori strukturno-podibnyx mir M
ss pobudovano netryvi-
al\nu jmovirnisnu �hlobal\nu� miru m, dlq qko] pidklas synhulqrno nepererv-
nyx mir Msc
ss [ mnoΩynog povno] miry: m( )Msc
ss = 1. Vodnoças, pidklasy
çysto toçkovyx ta absolgtno neperervnyx mir magt\ nul\ovu m-miru. Zaznaçy-
mo, wo prostir M
ss [ dosyt\ ßyrokym i vklgça[ v sebe vsi samopodibni miry,
vvedeni Xatçinsonom [8]. ZauvaΩymo, wo tra[ktori] dynamiçnyx system konf-
liktu, qk pravylo, naleΩat\ prostoru M
ss (dyv. [9, 10]). Z inßoho boku, qkwo
strukturno-podibni miry traktuvaty qk spektral\ni miry pevnyx samosprqΩenyx
operatoriv, to vstanovlenyj fakt zmistovno dopovng[ zhadani tverdΩennq pro
potuΩnist\ mnoΩyny synhulqrno neperervnyx funkcij ta operatoriv z synhu-
lqrno neperervnym spektrom.
Varto zaznaçyty, wo, nezvaΩagçy na potuΩnyj rozvytok fraktal\no] heo-
metri] [11], naqvnist\ hlybokyx doslidΩen\ po spektral\nyx asymptotykax dy-
ferencial\nyx operatoriv z synhulqrnymy potencialamy, zokrema fraktal\ny-
my [5], vynyknennq mul\tyfraktal\no] teori] synhulqrnyx rozpodiliv z bahato-
rivnevym analizom ta hradaci[g [12], doslidΩennqmy qvnoho vyhlqdu hranyçnyx
staniv dynamiçnyx system konfliktu [13 – 15], poslidovno] teori] synhulqrno
neperervnyx spektriv ta mir we ne stvoreno.
2. Strukturno-podibni miry. Vvedemo prostir imovirnisnyx strukturno-
podibnyx mir na vidrizku [ , ]0 1 ≡ ∆0 (dyv. [9, 10]), qkyj poznaça[mo çerez
M
ss( )[ , ]0 1 ≡ M
ss.
Rozhlqnemo sim�g T = { }Tik i
n
=1, k = 1, 2, … , 2 ≤ n < ∞, styskugçyx po-
dibnostej u R1. Prypustymo, wo dlq vsix k vykonugt\sq umovy
0 < c ≤ cik < 1,
de cik — koefici[nt stysku peretvorennq Tik ;
∗
Çastkovo pidtrymano proektom DFG 436 UKR 113/78.
© V. D. KOÍMANENKO, 2009
ISSN 1027-3190. Ukr. mat. Ωurn., 2009, t. 61, # 1 83
84 V. D. KOÍMANENKO
∆0 = Tik
i
n
∆0
1=
U ;
λ T Tik i k∆ ∆0 0I ′( ) = 0, i ≠ i ′ ,
λ poznaça[ miru Lebeha. Nexaj
Ui i i ik k1 1… ′… ′, : = T T T Ti i k i i kk k1 11 1
1… …′ ′
−( ) , 1 ≤ ik , ′ik ≤ n.
MnoΩynu S ⊂ ∆0 nazyva[mo strukturno-podibnog, qkwo dlq deqko] fik-
sovano] sim�] styskugçyx podibnostej T z navedenymy vywe vlastyvostqmy cq
mnoΩyna dopuska[ neskinçennu poslidovnist\ podribnen\ (rozkladiv) na podibni
miΩ sobog pidmnoΩyny:
S =
si
i
n
1
1 1=
U , si1
=
si i
i
n
1 2
2 1=
U , … , si ik1 1… −
=
si i i
i
n
k
k
1 2
1
…
=
U , … , (1)
de dlq koΩnoho fiksovanoho ranhu k = 1, 2, … neporoΩni pidmnoΩyny si i ik1 2 … ⊂
⊂ T Ti i k1 11 0… ∆ pov�qzani miΩ sobog:
si i ik1 2 … = U si i i i i ik k k1 1 1… ′… ′ ′… ′, . (2)
Pry c\omu prypuska[mo, wo
diam ( )si i ik1 2 … ≤ εk → 0, k → ∞ ,
ta
λ s si i i ik k1 1… ′… ′( )cl clI = 0,
qkwo il ≠ ′il xoça b dlq odnoho 1 ≤ l ≤ k , de cl poznaça[ zamykannq mno-
Ωyny.
Takym çynom, dlq strukturno-podibno] mnoΩyny S, wo dopuska[ zobraΩen-
nq (1), usi pidmnoΩyny fiksovanoho ranhu si i ik1 2 … podibni miΩ sobog. Podib-
nist\ miΩ sobog pidmnoΩyn riznoho ranhu ne vymaha[t\sq, tobto mnoΩyny
S, si1
, si i1 2
, … , si ik1… , …
vzahali ne [ podibnymy. Tomu ponqttq strukturno-podibno] mnoΩyny [ zahal\ni-
ßym, niΩ ponqttq samopodibno] mnoΩyny (dyv. [8]).
Imovirnisnu miru µ na vidrizku [ , ]0 1 nazyva[mo strukturno-podibnog, qkwo
heometryçnyj nosij ci[] miry Sµ : = supp µ [ strukturno-podibnog mnoΩynog i
vykonugt\sq nastupni umovy: dlq neporoΩnix pidmnoΩyn iz rozkladu (1) vidno-
ßennq
µ
µ
( )
( )
s
s
i i i
i i
k k
k
1 1
1 1
…
…
−
−
= : pi kk
> 0, si0
≡ ∆0, (3)
ne zaleΩat\ vid indeksiv i ik1 1… − ta
µ( )s si i i i ik k k1 1 1… ′… ′−
I = 0, (4)
qkwo il ≠ ′il xoça b dlq odnoho l = 1, … , k
.
PokaΩemo, wo miry µ ∈Mss moΩna buduvaty metodom Q -zobraΩennq dijs-
nyx çysel (dyv. [16]). Z ci[g metog rozhlqnemo neskinçennu vpravo prqmokutnu
matrycg
Q = { }qk k =
∞
1 = { } ,
,qk i k
n
= =
∞
1 1, n > 1,
de vektory qk , qki utvorggt\ stovpçyky matryci Q , [ stoxastyçnymy:
ISSN 1027-3190. Ukr. mat. Ωurn., 2009, t. 61, # 1
POVNA MIRA MNOÛYNY SYNHULQRNO NEPERERVNYX MIR 85
qk = ( ), ,q qk nk1 … ∈ R+
n , q qk nk1 + …+ = 1.
Nexaj vykonano umovy
qik > 0, inf
,
{ }
i k
ikq > 0. (5)
Q -zobraΩennq toçok x ∈ ≡∆0 0 1[ , ] zada[t\sq poslidovnistg iteracij. Na per-
ßomu kroci ∆0 rozklada[t\sq na vporqdkovanu sim�g, wo mistyt\ n zamkne-
nyx vidrizkiv ranhu 1:
∆0 ≡ [ , ]0 1 =
∆i
i
n
1
1 1=
U , λ ( )∆i1
= qi11
.
Na druhomu kroci koΩen vidrizok ∆i1
rozklada[t\sq v ob�[dnannnq vporqdkova-
nyx vidrizkiv ranhu 2:
∆i1
=
∆i i
i
n
1 2
2 1=
U , λ ( )∆i i1 2
= q qi i1 21 2
tak, wo vsi vidnoßennq
λ
λ
( )
( )
∆
∆
i i
i
1 2
1
= qi22
[ nezaleΩnymy vid nomera vidrizka perßoho ranhu. Analohiçno, na k - mu kroci
∆i ik1 1… −
= ∆i i
i
n
k
k
1
1
…
=
U , λ ( )∆i ik1… = q qi i kk11
… , (6)
λ
λ
( )
( )
∆
∆
i i
i i
k
k
1
1 1
…
… −
= qi kk
.
V rezul\tati vynyka[ zliçenna poslidovnist\ pokryttiv:
∆0 = ∆i
i
n
1
1 1=
U = ∆i i
i i
n
1 2
1 2 1=
U … ∆i i
i i
n
k
k
1
1 1
…
… =
U = … .
Oçevydno, wo na pidstavi (5) ta (6) linijni rozmiry vidrizkiv ∆i ik1… prqmugt\ do
nulq pry zrostanni k :
λ ∆i ik1…( ) → 0, k → ∞ .
Tomu koΩna fiksovana poslidovnist\ vkladenyx vidrizkiv ∆i1
⊃ ∆i i1 2
⊃ …
… ⊃ ∆i ik1… ⊃ … v peretyni mistyt\ lyße odnu toçku:
∆0 � x =
∆i i
k
k1
1
…
=
∞
I .
Cej fakt pryrodno zapysu[mo u vyhlqdi
x = ∆i ik1… …, (7)
de indeksy ik nazyvagt\ koordynatamy toçky x , a sam zapys (7) � Q -zobra-
Ωennqm toçky x .
NevaΩko baçyty, wo spivvidnoßennq
∆i i ik1 2 … = T Ti i kk11 0… ∆ (8)
vstanovlggt\ vza[mno odnoznaçnu vidpovidnist\ miΩ mnoΩynog vsix Q -zobra-
Ωen\ na ∆0 ta sim�qmy vvedenyx vywe styskagçyx podibnostej T.
ISSN 1027-3190. Ukr. mat. Ωurn., 2009, t. 61, # 1
86 V. D. KOÍMANENKO
Zrozumilo takoΩ, wo klas strukturno-podibnyx mir M
ss vklgça[ v sebe vsi
jmovirnisni samopodibni miry na vidrizku [ , ]0 1 = ∆0.
Pry fiksovanomu Q -zobraΩenni dlq pobudovy miry µ ∈Mss neobxidno
dodatkovo zadaty we odnu stoxastyçnu matrycg
P = { }pk k =
∞
1 = { } ,
,pik i k
n
=
∞
1, 1 ≥ pik ≥ 0,
stovpçyky qko] skladagt\sq z koordynat stoxastyçnyx vektoriv pk
n∈ +R .
Za matrycqmy Q ta P vvodymo poslidovnist\ kuskovo-rivnomirno rozpodi-
lenyx mir µk na ∆0, vyznaçenyx takym çynom:
µk : = ci i i i
i i
n
k k
k
1 1
1 1
… …
… =
∑ λ , (9)
de koefici[nty
ci ik1… : =
p p
q q
i i k
i i k
k
k
1
1
1
1
…
…
,
a λi ik1… : = λ ∆i ik1… poznaça[ zvuΩennq miry Lebeha. Na pidstavi (6) λ( )∆i ik1… =
= q qi i kk11
… . Tomu z (9) vyplyva[, wo hrafik funkci] rozpodilu f xk ( ) =
= µk x(( , ))− ∞ [ kuskovo-linijnog lamanog lini[g. Za pobudovog oçevydnog [
spravedlyvist\ spivvidnoßen\
µk i i
i i
n
k
k
( )∆
1
1 1
…
… =
∑ = 1,
µk i ik
( )∆
1… = µk i i i
i
n
k k
k
+ …
=
+
+
∑ 1
1
1 1
1
( )∆ ,
µk i i ik k+ … +1 1 1
( )∆ = µk i i i kk k
p( )∆
1 1 1… ++
.
Z c\oho vyplyva[, wo dlq poslidovnosti mir (9) isnu[ hranycq, µ = limk k→∞ µ ,
u sensi rivnomirno] zbiΩnosti. Pyßemo µ = µP , wob pidkreslyty zaleΩnist\
zbudovano] miry µ vid matryci P.
Varto zaznaçyty, wo na cylindryçnyx mnoΩynax ∆i ik1… znaçennq mir µP ,
µk vzahali [ riznymy:
µ( )∆i ik1… ≠ µk i ik
( )∆
1… = p pi i kk11
… . (10)
Oçevydno takoΩ, wo pry P = Q mira µP [ mirog Lebeha na ∆0.
Perekona[mosq, wo mira µP [ strukturno-podibnog. Z ci[g metog pobudu[-
mo pidmnoΩyny
si ik1… : =
S i ikµ I ∆
1…
# ,
de # oznaça[, wo vidrizok ∆i ik1… zalyßa[t\sq zamknenym, lyße qkwo
p k s
s
1
0
, +
=
∞
∏ = pn k s
s
, +
=
∞
∏
0
= 0.
Vykorystannq ∆i ik1…
# zamist\ ∆i ik1… obumovleno nerivnistg (10) i [ neobxidnym
dlq zabezpeçennq umov (3), (4). Za pobudovog
µ( )si ik1… = µ( )∆i ik1…
# = µk i ik
( )∆
1… = p pi ik1
… . (11)
ISSN 1027-3190. Ukr. mat. Ωurn., 2009, t. 61, # 1
POVNA MIRA MNOÛYNY SYNHULQRNO NEPERERVNYX MIR 87
Zrozumilo, wo na pidstavi (8) dlq koΩno] pary pidmnoΩyn si ik1… , si ik′… ′1
fikso-
vanoho ranhu k ≥ 1 isnu[ peretvorennq podibnosti, qke ]x po[dnu[:
si ik′… ′1
= T si i i i i ik k k′… ′ … …1 1 1, .
Teper, vraxovugçy (11), nevaΩko baçyty, wo µP ∈ Mss.
Dali matrycg Q vvaΩa[mo fiksovanog i rozhlqda[mo uves\ klas M
ss
strukturno-podibnyx mir µ = µP , asocijovanyx iz stoxastyçnymy matrycqmy
P. Dlq takyx mir pyßemo
µ ∈ Mpp , Mac , Msc ,
qkwo µ [ çysto toçkovog ( )µ µ= pp , çysto absolgtno neperervnog ( µ =
= µac) abo çysto synhulqrno neperervnog ( )µ µ= sc vidpovidno. Vidomo (dyv.
[6, 7, 9, 10]), wo dlq mir µ ∈ Mss [ spravedlyvym analoh teoremy DΩessena �
Vintnera pro çystotu spektral\noho typu. V terminax matryc\ P cej analoh
moΩna sformulgvaty takym çynom.
Teorema 1. KoΩna mira µ = µP ∈ M
ss ma[ çystyj spektral\nyj typ:
µ ∈Mpp ⇔ Pmax( )µ : =
k
kp
=
∞
∏
1
max, > 0, p kmax, : = max { }
i
ikp , (12)
µ ∈Mac ⇔ ρ µ λ( , ) : =
k
k
=
∞
∏
1
ρ > 0, ρk : =
i
n
ik ikp q
=
∑
1
, (13)
µ ∈Msc ⇔ Pmax( )µ = 0 = ρ µ λ( , ). (14)
3. Pobudova miry m. U c\omu punkti vvodyt\sq i doslidΩu[t\sq jmovirnis-
na mira m na prostori strukturno-podibnyx mir µ = µP ∈ M
ss ≡ M pry fik-
sovanomu Q -zobraΩenni. Dovodyt\sq, wo klas synhulqrno neperervnyx mir
Msc [ mnoΩynog povno] m -miry.
Mira m budu[t\sq na σ -alhebri, qka poznaça[t\sq çerez J
ss . Cq alhebra
porodΩena sim�[g cylindryçnyx pidmnoΩyn { }Ii ik
i ik
1
1
…
…β β
, qki vyznaçagt\sq takym
çynom.
Na perßomu kroci ( k = 1 ) poklada[mo
M =
Ii
i
n
1
1 1=
U , Ii1
: =
Ii
i
i
1
1
1
β
β ∈B
U ,
de βi1
poznaça[ zvyçajnu borelevu mnoΩynu z vidrizka [ , ]/1 1n , a
Ii
i
1
1
β
: =
µ µ β µ µ∈ ∈
=
= …
M ( ) ( ) { ( )}, max
, ,
∆ ∆ ∆i i i
j n
j1 1 1
1
11
.
U terminax matryc\ P (nahada[mo, wo µ = µP )
Ii
i
1
1
β
: =
µ βP i ip p∈ = ∈{ }M
1 11 1max, ,
pmax,1 : = max
, ,
{ }
j n
jp
= …1
1 .
Zaznaçymo, wo
1/n ≤ max
, ,
{ ( )}
j n
j
1
11= …
µ ∆ ≤ 1,
oskil\ky µ � jmovirnisna mira. OtΩe, borelivs\ka σ -alhebra B sklada[t\sq
lyße z pidmnoΩyn, roztaßovanyx na vidrizku [ , ]/1 1n .
ISSN 1027-3190. Ukr. mat. Ωurn., 2009, t. 61, # 1
88 V. D. KOÍMANENKO
Na druhomu kroci ( k = 2 ) rozklada[mo koΩnu pidmnoΩynu Ii1
:
Ii1
= Ii i
i
n
1 2
2 1=
U , Ii i1 2
: =
Ii i
i i
i i
1 2
1 2
1 2
β β
β β, ∈B
U ,
de
Ii i
i i
1 2
1 2
β β
: = µ
µ
µ
β µ µ
β
∈ ∈ =
= …
Ii
i i
i
i i i
j n
i j
i
1
1 1 2
1
2 1 2
2
1 21
( )
( )
( ) { ( )}, max
, ,
∆
∆
∆ ∆ .
Inßymy slovamy,
Ii i
i i
1 2
1 2
β β
: = µ β
β
P i i iI p pi∈ = ∈{ }1
1
2 22 2max, .
OtΩe,
Ii i1 2
=
Ii i
i
i
1 2
2
2
β
β ∈B
U ,
de
Ii i
i
1 2
2
β
: = µ
µ
µ
β µ µ∈ ∈ =
= …
Ii
i i
i
i i i
j n
i j1
1 2
1
2 1 2
2
1 21
( )
( )
( ) { ( )}, max
, ,
∆
∆
∆ ∆ .
Na k -mu ( k = 1, 2, … ) kroci vyznaça[mo
Ii ik
i ik
1
1
…
…β β
: = µ
µ
µ
β µ µ
β β
∈ ∈ =
…
… …
…
…
= …
…−
−
−
−
Ii i
i i
i i
i i i
j n
i i jk
i ik k
k
k k
k
k k1 1
1 1 1
1 1
1 1 11
( )
( )
( ) { ( )}, max
, ,
∆
∆
∆ ∆
z µ( )∆i0
≡ µ( )∆0 = 1. Zokrema, dlq dovil\nyx çysel b b ni ik1
1 1, , [ , ]/… ∈ ma[mo
Ii i
b b
k
i ik
1
1
…
…
: = µ
µ
µ
µ∈ = =
…
… …
… = …
…−
−
−
−
I bi i
b b i i
i i
i
j n
i i jk
i ik k
k
k
k
k k1 1
1 1 1
1 1
1 11
( )
( )
{ ( )}max
, ,
∆
∆
∆ .
Xoça moΩe statysq, wo mnoΩyna Ii i
b b
k
i ik
1
1
…
…
[ poroΩn\og, napryklad, qkwo bik
>
> bik −1
abo bik
< b nik −1 / .
OtΩe, za provedenog pobudovog
M =
i
n
iI
1
1
1=
U =
i i
n
i iI
1 2
1 2
1=
U = … =
i i
n
i i
k
k
I
1
1
1… =
…U = … ,
de mnoΩyny Ii ik1… dopuskagt\ vyznaçennq v terminax matryc\ P :
Ii ik1… =
Ii ik
i ik
i ik
1
1
1
…
…
… ∈
β β
β β B
U =
µ βP i l l ip p l k
l l
∈ = ∈ ≤ ≤{ }M max, , 1 .
Sim�q cylindryçnyx pidmnoΩyn
I i n ki i i kk
i ik
k1
1 1 1 2…
…
∈ = … = …{ }β β
β, , , , , , ,B
heneru[ (zhidno zi standartnog procedurog (dyv., napryklad, [17])) deqke kil\-
ce R .
Vvodymo na kil\ci R miru m takym çynom. Spoçatku poklada[mo
m Ii
i
1
1
β( ) : = qi i1 11
′λ β( ), ′λ β( )i1
: = cn iλ β( )
1
, cn =
n
n − 1
,
de vraxovano, wo λ( / )[ , ]1 1n =
n
n
− 1
. Tomu m( )Ii1
= qi11
i
ISSN 1027-3190. Ukr. mat. Ωurn., 2009, t. 61, # 1
POVNA MIRA MNOÛYNY SYNHULQRNO NEPERERVNYX MIR 89
m( )Ii
i
n
1
1 1=
∑ =
m
i
n
iI
i
i1
1
1
1
1= ∈
U U
β
β B
= 1.
Dali poklada[mo
m Ii i
i i
1 2
1 2
β β( ) : = q qi i i i1 2 1 21 2
′ ′λ β λ β( ) ( ).
Zvyçajno, m( )Ii i1 2
= q qi i1 21 2 ta
m( )Ii i
i i
n
1 2
1 2 1=
∑ =
m
i i
n
i iI i i
i i1 2
1 2
1 2
1 2
1= ∈
U U
β β
β β, B
= 1.
Dlq dovil\noho k vyznaça[mo
m Ii ik
i ik
1
1
…
…( )β β
: = q qi i k
l
k
ik l11
1
… ′
=
∏ λ β( )
i lehko perevirq[mo, wo
m( )Ii i
i i
n
k
k
1
1 1
…
… =
∑ =
m
i i
n
i i
k
k
i ik
i ik
I
1
1
1
1
1… =
…
…
… ∈
U U
β β
β β B
= 1,
oskil\ky q qi ii i
n
kk 11 1
…… =∑ = 1 ta ′λ ( / )[ , ]1 1n = 1. Z cylindryçnyx mnoΩyn mi-
ru m rozßyrg[mo na kil\ce R , a potim do zovnißno] miry m∗∗∗∗, vyznaçeno] na
usix pidmnoΩynax z M . Pry c\omu vykorystovu[t\sq toj fakt, wo
m I Ii i i ik
i ik
k
i ik
1
1
1
1
…
…
′… ′
…′ ′( )β β β β
I : =
l
k
i i i l i il l l l l
q
=
′ ′∏ ′( )
1
δ λ β βI ,
de vraxovano, wo nastupna mnoΩyna ne [ poroΩn\og,
I Ii i i ik
i ik
k
i ik
1
1
1
1
…
…
′… ′
…′ ′β β β β
I ≠ ∅,
lyße qkwo dlq vsix l = 1, … , k il = ′il ta
β βi il l
I ′ ≠ ∅. Ce zabezpeçu[ σ -
adytyvnist\ miry m .
Sim�q cylindryçnyx pidmnoΩyn
I ki i ik
i ik
k1
1 1 2…
…
= … ∈{ }β β
β, , , , B
pislq zastosuvannq standartno] procedury sta[ σ -alhebrog, qku my poznaça[mo
çerez J
ss . OtΩe, J
ss [ minimal\nog σ -alhebrog m∗∗∗∗
- vymirnyx (za Karateo-
dori) pidmnoΩyn, porodΩenyx kil\cem R . Pislq zvuΩennq zovnißn\o] miry m∗∗∗∗
na σ -alhebru J
ss oderΩu[mo jmovirnisnu miru, qku znovu poznaça[mo çerez m .
Takym çynom, m [ σ -adytyvnog mirog na alhebri J
ss .
Osnovnym rezul\tatom statti [ nastupna teorema.
Teorema 2. PidmnoΩyna strukturno-podibnyx synhulqrno neperervnyx mir [
mnoΩynog povno] m -miry:
m Msc
ss( ) = 1.
Dovedennq vyplyva[ z teoremy 6.1 z [17] ta rivnosti m
∗( )Mpp
ss = m
∗( )Mac
ss =
= 0 z nastupno] lemy. Zokrema, z (15) vyplyva[ vymirnist\ mnoΩyn çysto toç-
kovyx ta absolgtno neperervnyx mir, Mpp
ss , M Jac
ss ss∈ . Tomu, vraxovugçy (14),
ISSN 1027-3190. Ukr. mat. Ωurn., 2009, t. 61, # 1
90 V. D. KOÍMANENKO
robymo vysnovok, wo M Jsc
ss ss∈ , qk dopovnennq do M Mpp
ss
ac
ssU u mnoΩyni
M
ss . OtΩe, m
∗( )Msc
ss = m Msc
ss( ) = 1.
Lema. Zovnißnq mira m∗ mnoΩyn Mpp
ss , Mac
ss dorivng[ nulg:
m
∗( )Mpp
ss = m
∗( )Mac
ss = 0. (15)
Dovedennq. Zafiksu[mo deqku poslidovnist\ εk → 0, k → ∞ , napryklad,
poklademo εk = 1 / k . Vvedemo poslidovnist\ pidmnoΩyn
Tk : =
Ii i
i i
n
k
i ik
k
1
1
1 1
…
…
… =
β β
U , βi1
= [ , ]a1 1 , … , βik
= [ , ]ak 1 ,
de çysla ak vybrano tak, wob ′λ β( )ik
= εk . Poznaçymo
Tpp,k : =
µ µ∈ ∈{ }M Tpp
ss
k = T Mk I pp
ss .
Zrozumilo, wo
m∗( ),Tpp k ≤ m( )Tk ≤ m I i i
i i
n
k
i ik
k
1
1
1 1
…
…
… =
( )∑ β β
=
= q qi i k
l
k
i
i i
n
k l
k
1
1
1
11
… ′
=… =
∏∑ λ β( ) ≤ q qi i k
i i
n
ik
k
k1
1
1
1
… ′
… =
∑ λ β( ) = εk ,
oskil\ky q qi i ki i
n
kk 11
11
…… =∑ = 1.
NevaΩko pokazaty, wo dlq koΩno] miry µ ∈Mpp
ss isnu[ nomer k0 = k0( )µ
takyj, wo µ ∈Tk dlq vsix k ≥ k0
. Ce vyplyva[ z toho, wo dlq dovil\no] fik-
sovano] miry µ µ= ∈P Mpp
ss na pidstavi spivvidnoßennq (12) vykonu[t\sq umova
p kk max,∏ > 0. U svog çerhu z c\oho vyplyva[, wo p kmax, > 1 1− /k = 1 − εk
dlq vsix k ≥ k0 poçynagçy z deqkoho k0 = k0( )µ . Tomu µP k∈T , k ≥ k0
. Ot-
Ωe, koΩna mira µ ∈Mpp
ss naleΩyt\ usim mnoΩynam
Tpp,k poçynagçy z deqkoho
k , zaleΩnoho vid µ . OtΩe,
δk : =
m T Tpp pp, ,\k l
l
k
=
−
1
1
U → 0, k → ∞ . (16)
Poznaçymo
′Tpp,k : =
Tpp,ll
k
=1U . Zrozumilo, wo
′Tpp,k ⊂
′ +Tpp,k 1, a takoΩ Mpp
ss =
=
′
=
∞
Tpp,kk 1U . Tomu zhidno z (16) zavdqky σ -adytyvnosti zovnißn\o] miry
m
∗( )Mpp
ss = 0. Dijsno, za teoremog pro neperervnist\ miry dlq ob�[dnan\ pid-
mnoΩyn (dyv. [17], teorema 6.2) ma[mo
m
∗( )Mpp
ss =
lim ,
k
l
l
k
→∞
∗
=
′
m Tpp
1
U =
lim ( ),
k
k
→∞
∗m Tpp ≤
lim ( )
k
k
→∞
m T = lim
k
k
→∞
ε = 0.
Analohiçnym çynom moΩemo dovesty, wo m( )Mac
ss = 0.
Z ci[g metog vvedemo inßu poslidovnist\ pidmnoΩyn
Tk : =
µ µ ε ε
β β
∈ ∈ = − + = …{ }…
…
Mss I b q q l ki i i i l l i l lk
i ik
l l l1
1 2 2 1, , , , ,[ / / ]
i poznaçymo
ISSN 1027-3190. Ukr. mat. Ωurn., 2009, t. 61, # 1
POVNA MIRA MNOÛYNY SYNHULQRNO NEPERERVNYX MIR 91
Tac,k : =
µ µ∈ ∈{ }M Tac
ss
k = T Mk I ac
ss.
Zokrema, u vypadku, koly vsi qi kk
= 1 / n, moΩna poklasty βik
= [ / / ],1 1n n k+ ε .
NevaΩko zrozumity, wo dlq koΩno] miry µ ∈Mac
ss isnu[ nomer k0 = k0( )µ
takyj, wo
µ ∈Tac,k dlq vsix k ≥ k0
. Ce vyplyva[ iz spivvidnoßennq (13). Tomu
δk : =
m T Tac ac, ,\k l
l
k
=
−
1
1
U → 0, k → ∞ .
Poznaçymo
′Tac,k : =
Tac,ll
k
=1U . Zrozumilo, wo
′Tac,k ⊂
′ +Tac,k 1, a takoΩ Mac
ss =
=
′=
∞
Tac,kk 1U . Takym çynom, moΩna stverdΩuvaty, wo m
∗( )Mac
ss = 0 vnaslidok
σ -adytyvnosti zovnißn\o] miry. Dijsno,
m
∗( )Mac
ss =
lim ,
k
l
l
k
→∞
∗
=
′
m Tac
1
U =
lim ( ),
k
k
→∞
∗m Tac ≤
lim ( )
k
k
→∞
m T = lim
k
k
→∞
ε = 0,
de vykorystano spivvidnoßennq
m∗( ),Tac k ≤ m( )Tk = q qi i k
i i
n
ik
k
k1
1
1
1
… ′
… =
∑ λ β( ) = εk .
OtΩe, lemu, a razom z neg i teoremu 2 dovedeno.
1. Zamfirescu T. Most monotone functions are singular // Amer. Math. Mon. – 1981. – 88 . –
P. 47 – 79.
2. Simon B. Operators with singular continuous spectrum: I. Genaral operators // Ann. Math. – 1995.
– 141. – P. 131 – 145.
3. del Rio R., Jitomirskaya S., Makarov N., Simon B. Operators with singular continuous spectrum are
generic // Bull. Amer. Math. Soc. – 1994. – 31. – P. 208 – 212.
4. Jitomirskaya S., Simon B. Operators with singular continuous spectrum: III. Almost periodic
Schrodinger operators // J. Communs Math. Phys. – 1994. – 165, # 1. – P. 201 – 205.
5. Triebel H. Fractals and spectra related to Fourier analysis and functional spaces. – Basel etc.:
Birkhäuser, 1997.
6. Albeverio S., Koshmanenko V., Pratsiovytyi M., Torbin G. Spectral properties of image measures
under infinite conflict interactions // Positivity. – 2006. – 10. – P. 39 – 49.
7. Koshmanenko V., Kharchenko N. Spectral properties of image measures after conflict interactions
// Theory Stochast. Process. – 2004. – 10, # 3 – 4. – P. 73 – 81.
8. Hutchinson J. E. Fractals and selfsimilarity // Indiana Univ. Math. J. – 1981. – 30. – P. 713 – 747.
9. Koßmanenko V. D. Vidnovlennq spektral\noho typu hranyçnyx rozpodiliv u dynamiçnyx
systemax konfliktu // Ukr. mat. Ωurn. � 2007. � 59, # 6. � S. 771 � 784.
10. Karataieva T., Koshmanenko V. Origination of the singular continuous spectrum in the conflict
dynamical systems // Meth. Func. Anal. and Top. – 2009. – 14, # 1. – P. 16 – 29.
11. Falconer K. J. Fractal geometry. – Chichester: Wiley, 1990.
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mat. Ωurn. � 2005. � 57, # 5. � S. 706 � 721.
13. Koshmanenko V. On the conflict theorem for a pair of stochastic vectors // Ukr. Math. J. – 2003. –
55, # 4. – P. 555 – 560.
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2004. – 59, # 2. – P. 303 – 313.
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|
| id | umjimathkievua-article-3003 |
| institution | Ukrains’kyi Matematychnyi Zhurnal |
| keywords_txt_mv | keywords |
| language | Ukrainian English |
| last_indexed | 2026-03-24T02:34:24Z |
| publishDate | 2009 |
| publisher | Institute of Mathematics, NAS of Ukraine |
| record_format | ojs |
| resource_txt_mv | umjimathkievua/84/2fe58bcb004df0f0619458b4a3df5a84.pdf |
| spelling | umjimathkievua-article-30032020-03-18T19:43:07Z Full measure of a set of singular continuous measures Повна міра множини сингулярно неперервних мір Koshmanenko, V. D. Кошманенко, В. Д. On the space of structurally similar measures, we construct a nontrivial measure m such that the subclass of all purely singular continuous measures is a set of full m-measure. Ha пространстве структурно-подобных мер построена нетривиальная мера m такая, что подкласс всех чисто сингулярно непрерывных мер является множеством полной m-меры. Institute of Mathematics, NAS of Ukraine 2009-01-25 Article Article application/pdf https://umj.imath.kiev.ua/index.php/umj/article/view/3003 Ukrains’kyi Matematychnyi Zhurnal; Vol. 61 No. 1 (2009); 83-91 Український математичний журнал; Том 61 № 1 (2009); 83-91 1027-3190 uk en https://umj.imath.kiev.ua/index.php/umj/article/view/3003/2755 https://umj.imath.kiev.ua/index.php/umj/article/view/3003/2756 Copyright (c) 2009 Koshmanenko V. D. |
| spellingShingle | Koshmanenko, V. D. Кошманенко, В. Д. Full measure of a set of singular continuous measures |
| title | Full measure of a set of singular continuous measures |
| title_alt | Повна міра множини сингулярно неперервних мір |
| title_full | Full measure of a set of singular continuous measures |
| title_fullStr | Full measure of a set of singular continuous measures |
| title_full_unstemmed | Full measure of a set of singular continuous measures |
| title_short | Full measure of a set of singular continuous measures |
| title_sort | full measure of a set of singular continuous measures |
| url | https://umj.imath.kiev.ua/index.php/umj/article/view/3003 |
| work_keys_str_mv | AT koshmanenkovd fullmeasureofasetofsingularcontinuousmeasures AT košmanenkovd fullmeasureofasetofsingularcontinuousmeasures AT koshmanenkovd povnamíramnožinisingulârnoneperervnihmír AT košmanenkovd povnamíramnožinisingulârnoneperervnihmír |