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1.
Fethi SOLTANI 《数学研究及应用》2017,37(5):563-576
We recall some properties of the Segal-Bargmann transform; and we establish for this transform qualitative uncertainty principles: local uncertainty principle, Heisenberg uncertainty principle, Donoho-Stark''s uncertainty principle and Matolcsi-Sz\"ucs uncertainty principle. 相似文献
2.
3.
A revised pre-order principle and set-valued Ekeland variational principles with generalized distances
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Jing Hui Qiu 《数学学报(英文版)》2017,33(6):775-792
In my former paper "A pre-order principle and set-valued Ekeland variational principle"(see [J. Math. Anal. Appl., 419, 904–937(2014)]), we established a general pre-order principle.From the pre-order principle, we deduced most of the known set-valued Ekeland variational principles(denoted by EVPs) in set containing forms and their improvements. But the pre-order principle could not imply Khanh and Quy's EVP in [On generalized Ekeland's variational principle and equivalent formulations for set-valued mappings, J. Glob. Optim., 49, 381–396(2011)], where the perturbation contains a weak τ-function, a certain type of generalized distances. In this paper, we give a revised version of the pre-order principle. This revised version not only implies the original pre-order principle,but also can be applied to obtain the above Khanh and Quy's EVP. In particular, we give several new set-valued EVPs, where the perturbations contain convex subsets of the ordering cone and various types of generalized distances. 相似文献
4.
This paper surveys theoretical results on the Pontryagin maximum principle (together with its conversion) and nonlocal optimality conditions based on the use of the Lyapunov-type functions (solutions to the Hamilton-Jacobi inequalities). We pay special attention to the conversion of the maximum principle to a sufficient condition for the global and strong minimum without assumptions of the linear convexity, normality, or controllability. We give the survey of computational methods for solving classical optimal control problems and describe nonstandard procedures of nonlocal improvement of admissible processes in linear and quadratic problems. Furthermore, we cite some recent results on the variational principle of maximum in hyperbolic control systems. This principle is the strongest first order necessary optimality condition; it implies the classical maximum principle as a consequence. 相似文献
5.
The purpose of this paper is to establish the necessary conditions for optimality of a controlled stochastic differential system without differentiability assumptions on the drift. We use an approximation argument in order to obtain a sequence of smooth control problems, and we apply Ekeland's variational principle to derive the associated adjoint processes. Passing at the Limit with respect to the stable convergence, we obtain a weak adjoint process and the inequality between Hamiltonians. This result is a generalisation of Kushner's maximum principle 相似文献
6.
S. Friedland 《Journal of Optimization Theory and Applications》1978,24(2):303-313
It is shown that the maximum principle in optimal control and the min-max principle in differential games are consequences of a certain global principle which is stated here. 相似文献
7.
随着计算机技术的飞速发展,数据的收集和存储能力得到了极大的提高,在科学研究和社会生活的各个领域,海量表现形式复杂的数据涌现。针对同一对象从不同途径或不同层面获得的特征数据被称为多视角数据。多视角学习是利用事物的多种视角表征进行建模求解的一种新的机器学习方法,它一般需遵循两个原则:1)一致性原则;2)互补性原则。近年来,多视角学习已经引起了广泛的关注和研究。本文对多视角学习算法的研究以及相关理论研究的进展进行了综述,并指出了多视角学习面临的挑战及下一步可能的研究方向。 相似文献
8.
In this paper, we prove large deviations principle for the Nadaraya-Watson estimator and for the semi-recursive kernel estimator
of the regression in the multidimensional case. Under suitable conditions, we show that the rate function is a good rate function.
We thus generalize the results already obtained in the one-dimensional case for the Nadaraya-Watson estimator. Moreover, we
give a moderate deviations principle for these two estimators. It turns out that the rate function obtained in the moderate
deviations principle for the semi-recursive estimator is larger than the one obtained for the Nadaraya-Watson estimator.
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9.
S. Berhanu J. Hounie P. Santiago 《Transactions of the American Mathematical Society》2001,353(4):1661-1675
This paper establishes a similarity principle for a class of non-elliptic, smooth complex vector fields in the plane. This principle is used to prove a uniqueness result for a nonlinear Cauchy problem.
10.
Chen G. Y. Huang X. X. Hou S. H. 《Journal of Optimization Theory and Applications》2000,106(1):151-164
In this paper, we introduce the concept of approximate solutions for set-valued optimization problems. A sufficient condition for the existence of approximate solutions is obtained. A general Ekeland's variational principle for set-valued mappings in complete ordered metric spaces and complete metric spaces are derived. These results are generalizations of results for vector-valued functions in Refs. 1–4. 相似文献
11.
半无限及含孔无限平面在各种边界条件下的复位势基本解* 总被引:3,自引:1,他引:2
运用Riemann-Schwarz对称原理和线弹性力学解的叠加原理建立了半无限平面及含孔无限平面在各种边界条件下基本解的一般求解方法,并分别导出边界上受不同荷载以及边界固定等各种边界条件下的复位势基本解。 相似文献
12.
In this paper we present a Neumann type maximum principle for the Laplace operator on compact Riemannian manifolds. A key
point is the simple geometric nature of the constant in the a priori estimate of this maximum principle. In particular, this
maximum principle can be applied to manifolds with Ricci curvature bounded from below and diameter bounded from above to yield
a maximum estimate without dependence on a positive lower bound for the volume.
相似文献
13.
Ryusuke Kon 《Proceedings of the American Mathematical Society》2006,134(10):3025-3034
We establish an exclusion principle in discrete-time Kolmogorov systems by using average Liapunov functions. The exclusion principle shows that a weakly dominant species with a convex logarithmic growth rate function eliminates species with concave logarithmic growth rate functions. A general result is applied to specific population models. This application gives an improved exclusion principle for the specific population models.
14.
Fethi SOLTANI 《数学研究及应用》2016,36(6):689-702
We study some class of Dunkl multiplier operators; and we establish for them the Heisenberg-Pauli-Weyl uncertainty principle and the Donoho-Stark''s uncertainty principle. For these operators we give also an application of the theory of reproducing kernels to the Tikhonov regularization on the Sobolev-Dunkl spaces. 相似文献
15.
It is well known that S 12 cannot prove the injective weak pigeonhole principle for polynomial time functions unless RSA is insecure. In this note we investigate the provability of the surjective (dual) weak pigeonhole principle in S 12 for provably weaker function classes. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
16.
Ronaldo F. de Lima 《Annals of Global Analysis and Geometry》2001,20(4):325-343
Maximum principles at infinity generalize Hopf's maximum principle for hypersurfaces with constant mean curvature in R
n
. We establish such a maximum principle for parabolic surfaces in R3 with nonzero constant mean curvature and bounded Gaussian curvature. 相似文献
17.
V. V. Kozlov 《Regular and Chaotic Dynamics》2008,13(5):431-434
The paper generalizes the classical Gauss principle for non-constrained dynamical systems. For large anisotropic external
forces of viscous friction our statement transforms into the common Gauss principle for systems with constraints.
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18.
Generalized Gerstewitz's Functions and Vector Variational Principle for-Efficient Solutions in the Sense of Németh
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Jing Hui Qiu 《数学学报(英文版)》2019,35(3):297-320
In this paper, we first generalize Gerstewitz's functions from a single positive vector to a subset of the positive cone. Then, we establish a partial order principle, which is indeed a variant of the pre-order principle [Qiu, J. H.: A pre-order principle and set-valued Ekeland variational principle.J. Math. Anal. Appl., 419, 904–937(2014)]. By using the generalized Gerstewitz's functions and the partial order principle, we obtain a vector EVP for-efficient solutions in the sense of N′emeth, which essentially improves the earlier results by completely removing a usual assumption for boundedness of the objective function. From this, we also deduce several special vector EVPs, which improve and generalize the related known results. 相似文献
19.
A novel approach of calculating an insurance premium based on g-integrals and interval-valued integrals is introduced. The characterization theorem for the g-integral-based premium principle is proven, and the relations with some well-known premium principles are discussed. The main properties of the interval-valued premium principle based on the g-integral are presented and some illustrative examples are given. 相似文献
20.
本文首先推广了Capogna,Danielli和Garofalo关于p-次Laplace算子的径向解的一个重要公式,然后通过改进欧氏空间中证明Laplace算子的Hopf引理的方法,证明了H型群上p-次Laplace算子的Hopf型引理,进而证明了一个强极大值原理。 相似文献