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排序方式: 共有311条查询结果,搜索用时 15 毫秒
81.
Joan Rand Moschovakis 《Mathematical Logic Quarterly》2010,56(2):205-215
Five recursively axiomatizable theories extending Kleene's intuitionistic theory FIM of numbers and numbertheoretic (choice) sequences are introduced and shown to be consistent, by a modified relative realizability interpretation which verifies that every sequence classically defined by a Π11 formula is unavoidable (cannot fail to exist) and that no sequence can fail to be classically Δ11. The analytical form of Markov's Principle fails under the interpretation. The notion of strongly inadmissible rule of inference is introduced, with examples (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
82.
《Optimization》2012,61(2-3):129-141
This paper presents a vector valued variational principle by using a general concept of ?-efficiency and a nonconvex separation theorem 相似文献
83.
基于广义最大熵原理和遗传算法的多指标权重确定方法研究 总被引:7,自引:0,他引:7
本文探讨了多目标评价的实现过程,针对评价过程的权重确定问题,提出了基于广义最大熵原理和遗传算法的赋权方法,该方法把不同赋权方法有机地集成在一起,并可以对各种赋权方法进行优劣比较。最后用实例验证了该方法的准确性、可靠性和有效性。 相似文献
84.
Yuri Bakhtin 《Journal of statistical physics》2006,122(2):351-360
We consider the 3D Navier–Stokes system in the Fourier space with regular forcing given by a stationary in time stochastic
process satisfying a smallness condition. We explicitly construct a stationary solution of the system and prove a uniqueness
theorem for this solution in the class of functions with Fourier transform majorized by a certain function h. Moreover we prove the following “one force—one solution” principle: the unique stationary solution at time t is presented as a functional of the realization of the forcing in the past up to t. Our explicit construction of the solution is based upon the stochastic cascade representation. 相似文献
85.
86.
以不同地理居群的大蒜为研究对象,采用傅里叶变换红外光谱法获取各样品的红外谱图及不同波数下各样品的透过率数据,运用主成分分析及聚类分析等统计学方法对谱图数据进行了比较分析。结果发现,不同地理居群大蒜的红外指纹图谱存在差异,统计学分析结果显示25个品种大致可分为4大类(其中2个样品,4号及25号与这4类间有较大差异),此现象一定程度上反映了大蒜种植地居群环境对大蒜理化性质的影响。 相似文献
87.
Alexander D. Arvanitakis 《Proceedings of the American Mathematical Society》2003,131(12):3647-3656
We introduce the notion of -continuity, which generalizes both continuity and the hypothesis in the Generalized Banach Contraction Conjecture, and prove that any -continuous self-map on a scattered compact space, has an invariant finite set. We use the results and the techniques to prove the Generalized Banach Contraction Conjecture.
88.
89.
The applicability of the Principle of Corresponding States (PCS) for the noble fluids is discussed. We give the thermodynamic evidence for the dimerization of the liquid phase in heavy noble gases like argon, krypton etc. which manifests itself in deviations from the PCS. The behavior of the diameter of the entropy and the density is analyzed. It is shown that these characteristics are very sensitive to the dimerization process which takes place in the liquid phase of heavy noble gases. 相似文献
90.
R.A. Kamyabi Gol 《Journal of Mathematical Analysis and Applications》2008,340(1):219-225
We investigate shift invariant subspaces of L2(G), where G is a locally compact abelian group. We show, among other things, that every shift invariant space can be decomposed as an orthogonal sum of spaces each of which is generated by a single function whose shifts form a Parseval frame. 相似文献