Results 1 to 10 of about 359 (45)

An Application of Fuzzy Multiple Linear Regression in Biological Paradigm

open access: yesComplexity, 2022
The regression model is generally utilized in several fields of study because of its applications. Regression is an extremely incredible approach; it builds up a connection between dependent and independent variables.
Saima Mustafa   +6 more
doaj   +2 more sources

A slight improvement to Korenblum's constant [PDF]

open access: yes, 2007
Let $A^2(D)$ be the Bergman space over the open unit disk $D$ in the complex plane. Korenblum conjectured that there is an absolute constant $c \in (0,1)$ such that whenever $|f(z)|\le |g(z)|$ in the annulus ...
Chun-Yen Shen   +4 more
core   +2 more sources

On application of differential subordination for Carathéodory functions

open access: yesActa Universitatis Sapientiae: Mathematica, 2020
New sufficient conditions involving the properties of analytic functions to belong to the class of Carathéodory functions are investigated. Certain univalence and starlikeness conditions are deduced as special cases of main results.
Lavanya V. Agnes Sagaya Judy   +2 more
doaj   +1 more source

An improved Schwarz Lemma at the boundary

open access: yesOpen Mathematics, 2018
We obtain an new boundary Schwarz inequality, for analytic functions mapping the unit disk to itself. The result contains and improves a number of known estimates.
Mercer Peter R.
doaj   +1 more source

Toeplitz matrices whose elements are coefficients of Bazilevič functions

open access: yesOpen Mathematics, 2018
We consider the Toeplitz matrices whose elements are the coefficients of Bazilevič functions and obtain upper bounds for the first four determinants of these Toeplitz matrices.
Radhika Varadharajan   +3 more
doaj   +1 more source

Convex combination of analytic functions

open access: yesOpen Mathematics, 2017
Radii of convexity, starlikeness, lemniscate starlikeness and close-to-convexity are determined for the convex combination of the identity map and a normalized convex function F given by f(z) = α z+(1−α)F(z).
Cho Nak Eun   +2 more
doaj   +1 more source

On differential subordinations for a class of analytic functions defined by a linear operator

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 42, Page 2219-2230, 2004., 2004
We obtain several results concerning the differential subordination between analytic functions and a linear operator defined for a certain family of analytic functions which are introduced here by means of these linear operators. Also, some special cases are considered.
V. Ravichandran   +3 more
wiley   +1 more source

Length problems for Bazilevič functions

open access: yesDemonstratio Mathematica, 2019
Let C(r) denote the curve which is image of the circle |z| = r < 1 under the mapping f . Let L(r) be the length of C(r) and A(r) the area enclosed by the curve C(r).
Nunokawa Mamoru   +2 more
doaj   +1 more source

Coefficient estimates for bi-univalent Ma-Minda starlike and convex functions [PDF]

open access: yes, 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
core   +2 more sources

Contractive curves

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 30, Issue 4, Page 227-238, 2002., 2002
We discuss the dynamics of the correspondences associated to those plane curves whose local sections contract the Poincaré metric in a hyperbolic planar domain.
Araceli Bonifant, Marius Dabija
wiley   +1 more source

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