共查询到20条相似文献,搜索用时 15 毫秒
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B.A. Frasin 《Computers & Mathematics with Applications》2011,62(11):4272-4276
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Khalida Inayat Noor 《Computers & Mathematics with Applications》2011,62(12):4726-4732
In this paper, we discuss a subclass Vk(β,b,δ) of analytic functions, which was introduced and discussed by Latha and Nanjunda Rao (1994) [3]. Some results such as inclusion relationship, coefficient inequality and radius of convexity for this class are proved. We also observe that this class is preserved under the Bernardi integral transform. 相似文献
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The main object of the present paper is to discuss some extensions of certain integral operators and to obtain their order of convexity. Several other closely related results are also considered. 相似文献
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Making use of the Hohlov operator, the authors obtain inclusion relations between the classes of certain normalized analytic functions. Relevant connections of our work with the earlier works are pointed out. 相似文献
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Thomas W. Cusick 《国际计算机数学杂志》2015,92(8):1568-1573
Rotation symmetric Boolean functions have been extensively studied for about 15 years because of their applications in cryptography and coding theory. Until recently little was known about the basic question of when two such functions are affine equivalent. The simplest case of quadratic rotation symmetric functions which are generated by cyclic permutations of the variables in a single monomial was only settled in 2009. For the much more complicated case of cubic rotation symmetric functions generated by a single monomial, the affine equivalence classes under permutations which preserve rotation symmetry were determined in 2011. It was conjectured then that the cubic equivalence classes are the same if all nonsingular affine transformations, not just permutations, are allowed. This conjecture is probably difficult, but here we take a step towards it by proving that the cubic affine equivalence classes found in 2011 are the same if all permutations, not just those preserving rotation symmetry, are allowed. The needed new idea uses the theory of circulant matrices. 相似文献
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M.K. Aouf 《Computers & Mathematics with Applications》2011,62(9):3575-3580
In this paper, we obtain some subordination and superordination-preserving results of analytic functions involving the Liu-Owa integral operator. Sandwich-type result is also obtained. 相似文献
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On the number of rotation symmetric Boolean functions 总被引:2,自引:0,他引:2
FU ShaoJing LI Chao & QU LongJiang Science College of National University of Defense Technology Changsha China State Key Laboratory of Information Security Beijing National Mobile Communications Research Laboratory Southeast University Nanjing 《中国科学:信息科学(英文版)》2010,(3):537-545
Rotation symmetric Boolean functions (RSBFs) have been used as components of different cryptosystems. This class of functions are invariant under circular translation of indices. In this paper, we investigated balanced RSBFs and 1st order correlation immune RSBFs. Based on constructive techniques, we give an accurate enumeration formula for n-variable balanced RSBFs when n is a power of a prime. Furthermore, an original and efficient method to enumerate all n-variable (n prime) 1st order correlationimmune f... 相似文献
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This paper provides a unifying algorithm for computing any analytic interpolant of bounded complexity. Such computation can be performed by solving an optimization problem, due to a theorem by Georgiou and Lindquist. This optimization problem is numerically solvable by a continuation method. The proposed numerical algorithm is useful, among other cases, for designing a low-degree controller for a benchmark problem in robust control. The algorithm unifies previously developed algorithms for the Carathéodory extension and the Nevanlinna–Pick interpolation to one for more general interpolation problems. 相似文献
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Chun-Yi Gao Shao-Mou Yuan H.M. Srivastava 《Computers & Mathematics with Applications》2005,49(11-12):1787-1795
By making use of certain familiar integral operators, the authors introduce and investigate several new subclasses of starlike, convex, close-to-convex, and quasi-convex functions. Among other results presented here, the authors establish a number of inclusion relationships associated with some of these integral operators. Some of the results established in this paper would provide extensions of those given in earlier works. 相似文献
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In this paper, we obtain the existence of sign-changing solutions for nonlinear second-order differential equations with integral boundary value conditions, by applying a new fixed point theorem in ordered Banach spaces, with the lattice structure derived by Liu and Sun. Our results improve on those in the literature. 相似文献
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Fatma Sa?söz Muhammet Kamali? 《Computers & Mathematics with Applications》2011,62(4):1772-1779
In this paper, we introduce two new subclasses of p-valent analytic functions defined by means of fractional derivative of order δ. We obtained the various results including coefficient bounds and distortion inequalities for these function classes. Furthermore, we determine some inclusion relations for the (n,p,ε)-neighborhoods of a family of p-valent analytic functions with negative coefficients which is defined by means of a certain nonhomogeneous Cauchy-Euler differential equation. 相似文献
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On the stabilization of feedforward systems with bounded control 总被引:2,自引:0,他引:2
For the global asymptotic stabilization of nonlinear—controllable in the first approximation—cascades consisting of a globally asymptotically—locally exponentially stable system driving a stable system, a Lyapunov-like design is proposed. This yields (bounded) control laws, where the control magnitude can be chosen arbitrarily large. This result provides an alternative to classical forwarding. 相似文献
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Liang-Wu Cai 《Computer Physics Communications》2011,(3):663-668
In this short paper, problems with existing algorithms for computing spherical Bessel functions of complex arguments are reported. As a remedy, a revised algorithm based on the recurrence is proposed. The upper and lower limits for the starting order that can be used in the backward recurrence to reach a desired accuracy are given. The proposed algorithm is stable and is capable of computing a wide range of arguments approaching machine accuracy. 相似文献
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The rth order nonlinearity of a Boolean function is an important cryptographic criterion in analyzing the security of stream as well as block ciphers. It is also important in coding theory as it is related to the covering radius of the Reed-Muller code R(r,n). In this paper we deduce the lower bounds of the second order nonlinearities of the following two types of Boolean functions:
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- with d=22r+2r+1 and , where n=6r.
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- , where x,y∈F2t,n=2t,n?6 and i is an integer such that 1?i<t,gcd(2t-1,2i+1)=1.