Results 11 to 20 of about 317,748 (260)

QPTAS and Subexponential Algorithm for Maximum Clique on Disk Graphs [PDF]

open access: yes, 2018
A (unit) disk graph is the intersection graph of closed (unit) disks in the plane. Almost three decades ago, an elegant polynomial-time algorithm was found for Maximum Clique on unit disk graphs [Clark, Colbourn, Johnson; Discrete Mathematics '90]. Since
Bonnet, E.   +4 more
core   +6 more sources

Construction of Planar Harmonic Functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
Complex-valued harmonic functions that are univalent and sense-preserving in the open unit disk can be written in the form f=h+g¯, where h and g are analytic in the open unit disk.
Jay M. Jahangiri   +2 more
doaj   +1 more source

COEFFICIENT CONDITIONS FOR HARMONIC CLOSE-TO-CONVEX FUNCTIONS [PDF]

open access: yes, 2012
New sufficient conditions, concerned with the coefficients of harmonic functions $f(z)=h(z)+\bar{g(z)}$ in the open unit disk $\mathbb{U}$ normalized by $f(0)=h(0)=h'(0)-1=0$, for $f(z)$ to be harmonic close-to-convex functions are discussed. Furthermore,
HAYAMI, TOSHIO
core   +5 more sources

A fixed point theorem for analytic functions

open access: yesFixed Point Theory and Applications, 2005
We prove that each analytic self-map of the open unit disk which interpolates between certain n-tuples must have a fixed point.
Valentin Matache
doaj   +2 more sources

World Sheet Geometry of Classical Solutions in String Field Theory [PDF]

open access: yes, 2004
We investigate classical solutions of string field theory proposed by Takahashi and Tanimoto in the case of even order polynomial functions. The BRS charge and the Feynman propagator of open string field theory expanded around the solution are specified ...
Zeze, Syoji
core   +2 more sources

Geometric Inequalities via a Symmetric Differential Operator Defined by Quantum Calculus in the Open Unit Disk

open access: yesJournal of Function Spaces, 2020
The present investigation covenants with the concept of quantum calculus besides the convolution operation to impose a comprehensive symmetric q-differential operator defining new classes of analytic functions. We study the geometric representations with applications.
Rabha W. Ibrahim   +2 more
openaire   +3 more sources

A criterion for p-valently starlike functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
The object of the present paper is to prove a criterion for p-valently starlike functions in the open unit disk.
Shigeyoshi Owa   +2 more
doaj   +1 more source

Families of Riemann Surfaces, Uniformization and Arithmeticity [PDF]

open access: yes, 2016
A consequence of the results of Bers and Griffiths on the uniformization of complex algebraic varieties is that the universal cover of a family of Riemann surfaces, with base and fibers of finite hyperbolic type, is a contractible 2-dimensional domain ...
González-Diez, Gabino   +1 more
core   +2 more sources

Some criteria for univalence of certain integral operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We derive some criteria for univalence of certain integral operators for analytic functions in the open unit disk.
Virgil Pescar, Shigeyoshi Owa
doaj   +1 more source

The exact computation of the number of zeros of a real polynomial in the open unit disk: An algebraic approach

open access: yesComputers & Mathematics with Applications, 2000
Starting from the Schur-Cohn transformation and followed by the Brown transformation of a real polynomial, the authors establish a formula giving the number of the zeros in question.
Gleyse, B., Moflih, M.
openaire   +4 more sources

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