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排序方式: 共有3208条查询结果,搜索用时 15 毫秒
281.
In this paper we are concerned with developing generalizing concepts of Dunford–Pettis operators analogous to the generalization of compact operators by strictly singular operators. Also, we give some new results concerning the domination problem in the setting of positive operators between Banach lattices. 相似文献
282.
F.?G.?Badía C.?SangüesaEmail authorView authors OrcID profile 《Methodology and Computing in Applied Probability》2017,19(2):647-664
We consider a counting processes with independent inter-arrival times evaluated at a random end of observation time T, independent of the process. For instance, this situation can arise in a queueing model when we evaluate the number of arrivals after a random period which can depend on the process of service times. Provided that T has log-convex density, we give conditions for the inter-arrival times in the counting process so that the observed number of arrivals inherits this property. For exponential inter-arrival times (pure-birth processes) we provide necessary and sufficient conditions. As an application, we give conditions such that the stationary number of customers waiting in a queue is a log-convex random variable. We also study bounds in the approximation of log-convex discrete random variables by a geometric distribution. 相似文献
283.
Ilia?NegriEmail authorView authors OrcID profile Yoichi?Nishiyama 《Statistical Inference for Stochastic Processes》2017,20(3):387-397
The problem to establish the asymptotic distribution of statistical estimators as well as the moment convergence of such estimators has been recognized as an important issue in advanced theories of statistics. This problem has been deeply studied for M-estimators for a wide range of models by many authors. The purpose of this paper is to present an alternative and apparently simple theory to derive the moment convergence of Z-estimators. In the proposed approach the cases of parameters with different rate of convergence can be treated easily and smoothly and any large deviation type inequalities necessary for the same result for M-estimators do not appear in this approach. Applications to the model of i.i.d. observation, Cox’s regression model as well as some diffusion process are discussed. 相似文献
284.
285.
Christian?H.?Wei?Email authorView authors OrcID profile 《Methodology and Computing in Applied Probability》2017,19(3):997-1007
We analyze the eigenstructure of count-data Markov chains. Our main focus is on so-called CLAR(1) models, which are characterized by having a linear conditional mean, and also on the case of a finite range, where the second largest eigenvalue determines the speed of convergence of the forecasting distributions. We derive a lower bound for the second largest eigenvalue, which often (but not always) even equals this eigenvalue. This becomes clear by deriving the complete set of eigenvalues for several specific cases of CLAR(1) models. 相似文献
286.
Cristina?Draper Alberto?ElduqueEmail authorView authors OrcID profile Mikhail?Kochetov 《Algebras and Representation Theory》2017,20(5):1085-1107
For any grading by an abelian group G on the exceptional simple Lie algebra \(\mathcal {L}\) of type E 6 or E 7 over an algebraically closed field of characteristic zero, we compute the graded Brauer invariants of simple finite-dimensional modules, thus completing the computation of these invariants for simple finite-dimensional Lie algebras. This yields the classification of finite-dimensional G-graded simple \(\mathcal {L}\)-modules, as well as necessary and sufficient conditions for a finite-dimensional \(\mathcal {L}\)-module to admit a G-grading compatible with the given G-grading on \(\mathcal {L}\). 相似文献
287.
The joint distribution of the maximum loss and the maximum gain is obtained for a spectrally negative Lévy process until the passage time of a given level. Their marginal distributions up to an independent exponential time are also provided. The existing formulas for Brownian motion with drift are recovered using the particular scale functions. 相似文献
288.
Pawe??ZaprawaEmail authorView authors OrcID profile 《Mediterranean Journal of Mathematics》2017,14(1):19
The main aim of this paper is to discuss the third Hankel determinants for three classes: \(S^*\) of starlike functions, \(\mathcal {K}\) of convex functions and \(\mathcal {R}\) of functions whose derivative has a positive real part. Moreover, the sharp results for twofold and threefold symmetric functions from these classes are obtained. 相似文献
289.
Jiang-Long?WuEmail authorView authors OrcID profile Wen-Jiao?Zhao 《Mediterranean Journal of Mathematics》2017,14(5):198
In this paper, the boundedness for higher order commutators of fractional integrals is obtained on variable exponent Herz–Morrey spaces \( M\dot{K}_{p, q(\cdot )}^{\alpha (\cdot ), \lambda }(\mathbb {R}^{n})\) applying some properties of variable exponent and \(\mathrm {BMO}\) function, where \(\alpha (x)\in L^{\infty }(\mathbb {R}^{n})\) are log-Hölder continuous both at the origin and at infinity, and q(x) satisfies the logarithmic continuity condition. 相似文献
290.
Dorina?R?ducanuEmail authorView authors OrcID profile 《Mediterranean Journal of Mathematics》2017,14(4):167
In this paper, third-order differential subordination results are obtained for analytic functions associated with an operator defined by the normalized form of the generalized Mittag-Leffler functions. Some particular cases involving Mittag-Leffler and hyperbolic functions are also considered. 相似文献