α—次积分C—半群与抽象栖西问题

本文引入一般的α－次积分Ｃ－半群和ｍｉｌｄａα－次积分Ｃ－存在族概念,并讨论了它们与抽象柯西问题的联系。     

α-次积分C-半群与抽象柯西问题

本文引入一般的α-次积分C-半群和mildα-次积分C-存在族概念,并讨论它们与抽象柯西问题的联系．     

指数有界双连续α次积分C半群的扰动

在α次积分C半群和双连续n次积分C半群的基础上,探讨了双连续α次积分C半群的扰动性,得到了双连续α次积分C半群的扰动定理,并且在局部Lipschitz连续条件下证明双连续α次积分C半群的扰动理论仍然成立.     

一些单叶函数族导数的积分平均值

K(α),st_k(α),C(β,α),(α<1,β<1)分别表示α阶凸函数族,k 次对称的α阶星形函数族,α型β阶的近于凸函数族.在这篇文章中,我们分別对(?)(K(α)的闭凸包),(?),(?),(α<1,β≤1/2)决定了凸泛函L(f)=(1/(2π)(?)))~(1/p),0≤r<1,p≥1,n=1,2,…,的极值和极值函数.我们的结果表明:极值函数仅依赖于函数族而与参数 n,r,p 无关;而且对任何固定的函数族,除掉旋转外极值函数是唯一的.     

闭逐块光滑流形上的Cauchy—Fantanppie型积分的边界性质

对Ｃ＾ｎ空间中具有逐块Ｃ＾（１）光滑可定向边界δＤ的有界域Ｄ和著名的Ｃａｕｃｈｙ－Ｆａｎｔａｐｐｉｅ公式，本文定义一类与Ｂｏｃｈｎｅｒ－ｍａｒｔｉｎｅｌｌｉ核同伦等价的Ｃ－Ｆ核Ω，应用同伦方法证明具有Ｈｏｌｄｅｒ密度的相应奇异积分Ｆ（ｔ）存在哥西主值和Ｃ－Ｆ型积分Ｆ（ｚ）存在满足Ｈｏｌｄｅｒ条件的内，外极限值Ｆ＾＋（ｔ）和Ｆ＾－（ｔ）；同时建立一个更一般的含有边界上点ｔ的立体角系数α（ｔ）的Ｐｌｅ     

从属函数族的积分平均

本文通过对次调函数基本性质的讨论,对从属函数族建立了积分平均原理,然后给出它在星象函数族与凸象函数族中的运用,解决了面积极值问题和长度极值问题.并给出星相与凸象族以及其导数的积分平均原理,然后推扩到由星象或凸象函数所定义的函数族上去,这一方法还可运用许多其它函数族.     

解一类抽象积—微分方程的积分半群方法

在这篇文章内，研究一类含参数线性一算子族Ａ（ｔ）和线性算子Ｂ的积－微分方程，应用积分半群方法证明了该方程存在指数有界解，和含Ａ（ｔ），Ｂ的二阶微分方程存在指数有界和分解。这里Ａ（ｔ），Ｂ不必满足Ｈｉｌｌｅ－Ｙｏｓｉｄａ条件。     

局部积分C—半群与抽象Cauchy问题（Ⅲ）

在文［１］的基础上，讨论局部积分Ｃ－半群在抽象Ｃａｕｃｈｙ问题上的应用。     

指数有界双参数n阶m次积分C群的指数公式

利用经典算子半群理论中的方法,基于指数有界双参数n阶α次积分C群的概念,得到了指数有界双参数n阶m次积分C群的指数公式     

关于与k-折对称点有关的近于凸和拟凸函数族的子族

本文引入了两类新的与k折对称点有关的近于凸和拟凸函数族的子族C(k)(λ,α,β)和QC(k)(λ,α,β).给出了这些函数族的系数不等式,积分表达式,包含和从属关系,卷积条件和覆盖定理.所得到的结果推广了一些相关文献的结果,并得到了一些新的结果.     

Mild Integrated C-existence Families and Abstract Cauchy Problems

in this paper, we first give a Hille-Yosida type sufficient and necessary conditionfor n-times integrated mild C-existence families. Then, we present a Laplace type sufficientand necessary condition for exponentially bounded n-times integrated C-semigrougs, andstudy the relationship between integrated regularized semigroups and general regularizedsemigroups. Finally, we offer a characterization of integrated C-semigroups in terms of thesolvability of abstract Cauchy problems.     

a次积分C-半群的扰动

在α次积分半群的扰动理论的基础上,讨论了α次积分C-半群的可交换扰动问题,得到了α次积分D半群的扰动定理.     

α-次积分半群的Trotter-kato定理

§１．　ＩｎｔｒｏｄｕｃｔｉｏｎＷｈｅｎｗｅｉｎｔｅｇｒａｔｅｄｉｆｆｅｒｅｎｔｉａｌｅｑｕａｔｉｏｎｓ，ｗｅｃａｎｆｏｒｍｕｌａｔｅｍａｎｙｏｆｔｈｅｍａｓａｎａｂｓｔｒａｃｔＣａｕｃｈｙｐｒｏｂｌｅｍ．ＡｎａｔｕｒａｌｑｕｅｓｔｉｏｎｉｎｔｈｅｔｈｅｏｒｙｉｓｔｏｆｉｎｄｓｕｉｔａｂｌｅｃｏｎｄｉｔｉｏｎｓｕｎｄｅｒｗｈｉｃｈａｓｅｑｕｅｎｃｅｏｆａａｂｓｔｒａｃｔＣａｕｃｈｙｐｒｏｂｌｅｍ．ｕ′ｎ＝Ａｎｕｎ（ｔ），ｕｎ（０）＝ｘｎ，ｆｏｒｔ≥０，ｎ＝１，２，…ｉｎａｎａｒｂｔｉｒａｒｙＢａ…     

HOLOMORPHIC INTERGATED MILD C-EXISTENCE FAMILIES

0IntroductionIn[1],deLaubenfelsdefilledexpollelltiitllyboullded11olonlorphicC-existeuccfalllilies,holomorpllicC-senhgroupsand11olonlorpllicilltegratedselnigroups.Healsodiscussedtheirrelationships,alldgavesomeHille-YOsidatypecollditiollsforalloperatortogenerateallyofthesefamiliesofoperatorsin[1].ZllengalldLetdefinedexpollelltiallyboulldedllololllorphiconceilltegratedC-semigroups,andpreselltedageueratiolltlleorelllill[2J.Moregelleral71-tilllesintegratedmildC-existencefamilieswereintroducedby…     

完全二阶抽象柯西问题的温和C-存在族和解空间

本文中,我们定义了完全二阶抽象柯西问题的温和C-存在族.对指数有界的温和C-存在族,我们还给出了温和C-存在族的Hille-Yosida型的充要条件.对不完全二阶抽象柯西问题,我们定义了解空间和Hille-Yosida空间,我们还证明了不完全二阶抽象柯西问题在其Hille-Yosida空间上是自动适定的,把deLaubenfels文中关于一阶抽象柯西问题的相应结果推广到了二阶的情形.     

Characteristic Conditions for the Generation of α-Times Resolvent Families on a Hilbert Space

In 2000,Shi and Feng gave the characteristic conditions for the generation of C0semigroups on a Hilbert space.In this paper,we will extend them to the generation of α-times resolvent operator families.Such characteristic conditions can be applied to show rank-1 perturbation theorem and relatively-bounded perturbation theorem for α-times resolvent operator families.     

MULTIPLICATIVE PERTURBATIONS OF LOCALα-TIMES INTEGRATED C-SEMIGROUPS

We establish some left and right multiplicative perturbations of a local α-times integrated C-semigroup S(·) on a complex Banach space X with non-densely defined generator, which can be applied to obtain some additive perturbation results concerning S(·). Some growth conditions of the perturbations of S(·) are also established.     

α次积分半群的扰动

在n次积分半群及一次积分半群扰动理论的基础上,探讨了α次积分半群的扰动性,得到了α次积分半群的扰动定理.     

Exact <Emphasis Type="Italic">L</Emphasis><Subscript><Emphasis Type="Italic">2</Emphasis></Subscript>-small ball behavior of integrated Gaussian processes and spectral asymptotics of boundary value problems

We find the exact small deviation asymptotics for the L₂-norm of various m-times integrated Gaussian processes closely connected with the Wiener process and the Ornstein – Uhlenbeck process. Using a general approach from the spectral theory of linear differential operators we obtain the two-term spectral asymptotics of eigenvalues in corresponding boundary value problems. This enables us to improve the recent results from [15] on the small ball asymptotics for a class of m-times integrated Wiener processes. Moreover, the exact small ball asymptotics for the m-times integrated Brownian bridge, the m-times integrated Ornstein – Uhlenbeck process and similar processes appear as relatively simple examples illustrating the developed general theory.Partially supported by grants of RFBR 01-01-00245 and 02-01-01099.