Results 41 to 50 of about 16,584 (269)
The second Hankel determinant for starlike and convex functions of order alpha
Complex Variables and Elliptic Equations, 2021 In recent years, the study of Hankel determinants for various subclasses of normalised univalent functions given by for has produced many interesting results. The main focus of interest has been estimating the second Hankel determinant of the form .
Y. J. Sim, D. Thomas, P. Zaprawa
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Spanning graphs of hypercubes: starlike and double starlike trees
Discrete Mathematics, 2002 AbstractThe aim of this paper is to prove that certain trees are spanning trees of the hypercube Qn. We introduce a new family of graphs which span hypercubes and we characterize the double starlike trees with maximum degree up to six that span a hypercube.
Michel Mollard, Mohamed Kobeissi
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Coefficient estimates for bi-univalent Ma-Minda starlike and convex functions [PDF]
, 2011 Estimates on the initial coefficients are obtained for normalized analytic functions $f$ in the open unit disk with $f$ and its inverse $g=f^{-1}$ satisfying the conditions that $zf'(z)/f(z)$ and $zg'(z)/g(z)$ are both subordinate to a starlike univalent
Ali +14 more
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Starlike Meromorphic Functions [PDF]
Proceedings of the American Mathematical Society, 1972 In this paper we study meromorphic univalent functions which map the unit disk onto the exterior of a domain which is starlike with respect to some finite point different from the origin. We obtain bounds on the arc length, an integral representation, and bounds on the maximum modulus of starlike meromorphic functions.
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Subclasses of close-to-convex functions
International Journal of Mathematics and Mathematical Sciences, 1983 Let 𝒦[C,D], −1 ...
E. M. Silvia
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Mathematics, 2021 In this paper, the concepts of symmetric q-calculus and conic regions are used to define a new domain Ωk,q,α˜, which generalizes the symmetric conic domains.
Shahid Khan +4 more
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Certain Properties of Some Families of Generalized Starlike Functions with respect to q-Calculus
Abstract and Applied Analysis, 2016 By making use of the concept of q-calculus, various types of generalized starlike functions of order α were introduced and studied from different viewpoints.
Ben Wongsaijai, Nattakorn Sukantamala
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A discontinuity in the low-mass initial mass function [PDF]
, 2007 The origin of brown dwarfs (BDs) is still an unsolved mystery. While the standard model describes the formation of BDs and stars in a similar way recent data on the multiplicity properties of stars and BDs show them to have different binary distribution ...
Bate M. R. +9 more
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No starlike trees are cospectral
Discrete Mathematics, 2002 AbstractA tree is said to be starlike if exactly one of its vertices has degree greater than two. We show that no two non-isomorphic starlike trees are cospectral.
Ivan Gutman, Mirko Lepović
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Proceedings of the American Mathematical Society, 1985 In the present paper, among other things, we prove that if f (f (O) = 0, f'(O) = 1) is regular and odd starlike in Izi 1/2, 7. 1/2, IzI < 1. As an application, we show that each partial sum of an odd convex function is close-to-convex in lzl
Sangita Puri, Ram Lakhan Singh
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