共查询到20条相似文献,搜索用时 15 毫秒
1.
Berkhout Joost Heidergott Bernd Sommer Jennifer Daduna Hans 《Computational Management Science》2019,16(4):697-714
Computational Management Science - Queuing networks are a well-established approach to modeling and analysis of complex systems. This paper develops an approach to risk-analysis of queuing network... 相似文献
2.
Summary In this paper we consider the so-called generalized airfoil singular integral equation, with a smooth input function, and present ad hoc quadrature rules to compute efficiently the elements of collocation and Galerkin matrices.Work sponsored by the Italian Ministry of Education 相似文献
3.
Joël Blot 《Optimization》2016,65(5):947-955
We establish new results of first-order necessary conditions of optimality for finite-dimensional problems with inequality constraints and for problems with equality and inequality constraints, in the form of John’s theorem and in the form of Karush–Kuhn–Tucker’s theorem. In comparison with existing results, we weaken assumptions of continuity and of differentiability. 相似文献
4.
H. Nakayama H. Sayama Y. Sawaragi 《Journal of Optimization Theory and Applications》1975,17(3-4):211-227
As is well known, a saddle point for the Lagrangian function, if it exists, provides a solution to a convex programming problem; then, the values of the optimal primal and dual objective functions are equal. However, these results are not valid for nonconvex problems.In this paper, several results are presented on the theory of the generalized Lagrangian function, extended from the classical Lagrangian and the generalized duality program. Theoretical results for convex problems also hold for nonconvex problems by extension of the Lagrangian function. The concept of supporting hypersurfaces is useful to add a geometric interpretation to computational algorithms. This provides a basis to develop a new algorithm. 相似文献
5.
Qiu Weisheng 《数学学报(英文版)》1994,10(1):49-58
The Multiplier Theorem is a celebrated theorem in the Design theory. The conditionp>λ is crucial to all known proofs of the multiplier theorem. However in all known examples of difference sets μ
p
. is a multiplier for every primep with (p, v)=1 andp‖n. Thus there is the multiplier conjecture: “The multiplier theorem holds without the assumption thatp>λ”. The general form of the multiplier theorem may be viewed as an attempt to partially resolve the multiplier conjecture,
where the assumption “p>λ” is replaced by “n
1>λ”. Since then Newman (1963), Turyn (1964), and McFarland (1970) attempted to partially resolve the multiplier conjecture
(see [7], [8], [9]). This paper will prove the following result using the representation theory of finite groups and the algebraic
number theory: LetG be an abelian group of orderv,v
0 be the exponent ofG, andD be a (v, k, λ)-difference set inG. Ifn=2n
1, then the general form of the multiplier theorem holds without the assumption thatn
1>λ in any of the following cases:
Supported by the scientific research finances of Peking University. 相似文献
2〈 | n 1; |
a | 2 Xn 1 and (v, 7)=1; |
2 Xn1, 7〈 | v, andt≡1 or 2 or 4 (mod 7). |
6.
《Journal of the Egyptian Mathematical Society》2014,22(1):31-35
In this paper, we study new generalized integral operators for the classes of p-valent functions associated with generalized multiplier transformations. 相似文献
7.
Tavan T. Trent 《Proceedings of the American Mathematical Society》2008,136(8):2835-2838
We construct a simple reproducing kernel space whose multiplier algebra does not satisfy a ``corona theorem'.
8.
Using a bounding technique, we prove that the fluid model of generalized Jackson network (GJN) with vacations is the same
as a GJN without vacations, which means that vacation mechanism does not affect the dynamic performance of GJN under fluid
approximation. Furthermore, in order to present the impact of vacation on the performance of GJN, we show that exponential
rate of convergence for fluid approximation only holds for large N, which is different from a GJN without vacations. The results on fluid approximation and convergence rate are embodied by
the queue length, workload, and busy time processes. 相似文献
9.
10.
11.
In this article we introduce the paranormed sequence spaces(f,Λ,△m,p),c0(f,Λ,△m,p) and ■∞(f,Λ,△m,p),associated with the multiplier sequence Λ =(λk),defined by a modulus function f.We study their different properties like solidness,symmetricity,completeness etc.and prove some inclusion results. 相似文献
12.
13.
14.
15.
The Schur product of two n×n complex matrices A=(aij), B=(bij) is defined by A°B=(aijbij. By a result of Schur [2], the algebra of n×n matrices with Schur product and the usual addition is a commutative Banach algebra under the operator norm (the norm of the operator defined on n by the matrix). For a fixed matrix A, the norm of the operator B?A°B on this Banach algebra is called the Schur multiplier norm of A, and is denoted by ∥A∥m. It is proved here that for all unitary U (where ∥·∥ denotes the operator norm) iff A is a scalar multiple of a unitary matrix; and that ∥A∥m=∥A∥ iff there exist two permutations P, Q, a p×p (1?p?n) unitary U, an (n?p)×(n?p)1 contraction C, and a nonnegative number λ such that and this is so iff , where ā is the matrix obtained by taking entrywise conjugates of A. 相似文献
16.
Joseph Abarbanel 《Israel Journal of Mathematics》1998,105(1):197-202
Letk be a field, andA a finitely generatedk-algebra, with augmentation. Suppose there is a presentation ofA 0→I→R→A→0 whereR is a finitely generated freek-algebra andI is non-zero. IfA is infinite dimensional overk, Lewin proved thatR/I
2 is not finitely presented. A stronger statement would be that the ‘Schur multiplier’ ofR/I
2 is not finite dimensional. In the case thatA is an augmented domain, we prove this stronger statement, and some related statements. 相似文献
17.
18.
Bergman kernel on generalized exceptional hua domain 总被引:1,自引:0,他引:1
We have computed the Bergman kernel functions explicitly for two types of generalized exceptional Hua domains, and also studied the asymptotic behavior of the Bergman kernel function of exceptional Hua domain near boundary points, based on Appell's multivariable hypergeometric function. 相似文献
19.
Jennifer Randall 《Journal of Geometric Analysis》1996,6(2):287-316
We obtain an explicit expression for the heat kernelh t , on a generalized Heisenberg orH-type groupN. We also show thath t has an analytic extensionh z ,z ∈ ?, Re(z) > 0, andh z is bounded inL p (N). We obtain estimates for $\left\| {h_z } \right\|p, 1 \leqslant p \leqslant \infty $ . 相似文献
20.