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《数学学报》2020,(1):I0001-I0003
Asymptotic and Partial Asymptotic Hankel Operators on H^2(D^n)Anuradha GUPTA Bhawna GUPTA Abstract In this paper,we generalize the concept of asymptotic Hankel operators on H^2(D)to the Hardy space H^2(D^n)(over polydisk)in terms of asymptotic Hankel and partial asymptotic Hankel operators and investigate some properties in case of its weak and strong convergence.  相似文献   

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《数学学报》2020,(1):I0004-I0006
Sufficient Conditions for Maximally Edge-connected and Super-edge-connected Digraphs Dependingon the Size Sebastian MILZ Lutz VOLKMANN Abstract Let D be a finite and simple digraph with vertex set V(D).The minimum degree δ of a digraph D is defined as the minimum value of its out-degrees and its in-degrees.  相似文献   

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正Local Nonautonomous Schrodinger Flows on Kahler Manifolds Zong Lin JIA You De WANG Abstract In this paper,we prove that the nonautonomous Schrodinger flow from a compact Riemannian manifold into a Kahler manifold admits a local solution.Under some certain conditions,the solution is unique and has higher regularity.  相似文献   

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正On the Chow Groups of Certain Cubic Fourfolds Robert LATERVEER Abstract This note is about the Chow groups of a certain family of smooth cubic fourfolds.This family is characterized by the property that each cubic fourfold X in the family has an involution such that the induced involution on the Fano variety F of lines in X is symplectic  相似文献   

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正Relative Left Derived Functors of Tensor Product Functors Jun Fu WANG Zhao Yong HUANG Abstract We introduce and study the relative left derived functor Tor_n~((J,J'))(-,-)in the module category,which unifies several related left derived functors.Then we give some criteria for computing the J-resolution dimensions of modules in terms of the properties of Tor_n~((J,J'))(-,-).  相似文献   

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《数学学报》2020,(3):I0001-I0006
Exceptional Cycles in the Bounded Derived Categories of Quivers Peng GUO Pu ZHANG Abstract An exceptional n-cycle in a Hom-finite triangulated category with Serre functor has been recently introduced by Broomhead,Pauksztello and Ploog.When n=1,it is a spherical object.We explicitly determine all the exceptional cycles in the bounded derived category D^b(kQ) of a finite quiver Q without oriented cycles.In particular,if Q is an Euclidean.  相似文献   

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《数学学报》2021,(1):I0001-I0002
Diskcyclicity of Sets of Operators and Applications Mohamed AMOUCH Otmane BENCHIHEB Abstract In this paper,we introduce and study the diskcyclicity and disk transitivity of a set of operators.We establish a diskcyclicity criterion and give the relationship between this criterion and the diskcyclicity.As applications,we study the diskcyclicty of C0-semigroups and C-regularized groups.  相似文献   

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