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作者:Sebastian; MILZ; Lutz; VOLKMANN 刊期:2019年第12期
Let D be a finite and simple digraph with vertex set V(D).The minimum degreeδof a digraph D is defined as the minimum value of its out-degrees and its in-degrees.If D is a digraph with minimum degreeδand edge-connectivity λ,then λ≤δ.A digraph is maximally edge-connected ifλ=δ.A digraph is called super-edge-connected...
作者:Seyed; Mohsen; MOOSAVI; Khosro; TAJBAKHSH 刊期:2019年第12期
In this paper we give a classification of special endomorphisms of nil-manifolds:Let f:N/Γ→N/Γbe a covering map of a nil-manifold and denote by A:N/Γ→N/Γthe nil-endomorphism which is homotopic to f.If f is a special TA-map,then A is a hyperbolic nil-endomorphism and f is topologically conjugate to A.
作者:Ming; Chu; GAO 刊期:2019年第12期
In this paper,we construct random two-faced families of matrices with non-Gaussian entries to approximate a bi-free central limit distribution with a positive definite covariance matrix.We prove that,under modest conditions weaker than independence,a family of random two-faced families of matrices with non-Gaussian e...
作者:Khadijah; SHARAF 刊期:2019年第12期
We consider a fourth order nonlinear PDE involving the critical Sobolev exponent on a bounded domain of R^n,n≥5 with Navier condition on the boundary.We study the lack of compactness of the problem and we provide an existence theorem through a new index formula.
作者:Chao; LU; Zhuang; CHEN; Xue; Jun; WANG 刊期:2019年第12期
In this paper,we study the complete f-moment convergence for widely orthant dependent(WOD,for short)random variables.A general result on complete f-moment convergence for arrays of rowwise WOD random variables is obtained.As applications,we present some new results on complete f-moment convergence for WOD random vari...
作者:Zi; Qiang; FENG; Fei; LIU; Fang; WANG 刊期:2019年第12期
Basing upon the recent development of the Patterson–Sullivan measures with a H¨older continuous nonzero potential function,we use tools of both dynamics of geodesic flows and geometric properties of negatively curved manifolds to present a new formula illustrating the relation between the exponential decay rate of P...
作者:Xin; WANG 刊期:2019年第12期
In this paper,we prove quasi-modularity property for the twisted Gromov–Witten theory of O(3)over P^2.Meanwhile,we derive its holomorphic anomaly equation.
作者:Lei; WANG; Yin; LIU 刊期:2019年第12期
This paper constructs several families of self-complementary Cayley graphs of extraspecial p-groups,where p is a prime and congruent to 1 modulo 4.
作者:Jin; Hua; YANG; Qi; YANG; Xue; Cheng; PANG 刊期:2019年第12期
In this paper,we continue to discuss the normality concerning omitted holomorphic function and get the following result.Let F be a family of meromorphic functions on a domain D,k≥4 be a positive integer,and let a(z)and b(z)be two holomorphic functions on D,where a(z)■0 and f(z)≠∞ whenever a(z)=0.If for any f∈F,f...
作者:Xiao; Ming; DU; Xue; Zhi; ZHAO 刊期:2019年第12期
The set of self-mapping degrees of S^3-geometry 3-manifolds in[2]have some mistakes when the fundamental group of the 3-manifold is D4n^*,O48^*,D'n·2q or T'8·3q.So we need to make this errata.The self-mapping degrees of all closed and oriented 3-manifolds are listed in[1]and[5].The table of spherical case in[5]is mos...
刊期:2019年第12期
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