Results 91 to 100 of about 16,584 (269)

Ice age land bridges to continental islands: Repeated migration of the forest‐dwelling sable in northeastern Asia

Journal of Biogeography, Volume 51, Issue 5, Page 924-939, May 2024.
Abstract Aim The continental island system comprising Sakhalin, Hokkaido and the southern Kuril Islands (SHSK) in northeastern Asia serves as one of the southernmost habitats for many boreal and arctic organisms, with colonization via land bridges formed during glacial periods.
Gohta Kinoshita, Takuma Sato, Shota Murakami, Vladimir Monakhov, Alexey P. Kryukov, Lyubov V. Frisman, Yoshihiro Tsunamoto, Yoshihisa Suyama, Takahiro Murakami, Hitoshi Suzuki, Jun J. Sato   +10 more
wiley   +1 more source

Subclass of harmonic starlike functions associated with salagean derivative

Le Matematiche, 2014
The purpose of the present paper is to establish some results involving coefficient conditions, distortion bounds, extreme points, convolution, and convex combinations for a new class of harmonic univalent functions in the open unit disc \ associated ...
H. E. Darwish, A. Y. Lashin, S. M. Soileh   +2 more
doaj  

Some properties of analytic functions related with Booth lemniscate

Acta Universitatis Sapientiae: Mathematica, 2018
The object of the present paper is to study of two certain subclass of analytic functions related with Booth lemniscate which we denote by ℬ𝒮 (α) and ℬ𝒦 (α). Some properties of these subclasses areconsidered.
Najmadi P., Najafzadeh Sh., Ebadian A.
doaj   +1 more source

On Coefficient Inequalities of Starlike Functions Related to the q-Analog of Cosine Functions Defined by the Fractional q-Differential Operator

Fractal and Fractional, 2023
This article extends the study of q-versions of analytic functions by introducing and studying the association of starlike functions with trigonometric cosine functions, both defined in their q-versions.
Yusra Taj, Sarfraz Nawaz Malik, Adriana Cătaş, Jong-Suk Ro, Fairouz Tchier, Ferdous M. O. Tawfiq   +5 more
doaj   +1 more source

On Bogovski\u{\i} and regularized Poincar\'e integral operators for de Rham complexes on Lipschitz domains

, 2009
We study integral operators related to a regularized version of the classical Poincar\'e path integral and the adjoint class generalizing Bogovski\u{\i}'s integral operator, acting on differential forms in $R^n$.
Alan McIntosh, D. Mitrea, D.N. Arnold, H. Triebel, J. Gopalakrishnan, J.T. Wloka, M. Costabel, M. Mitrea, M. Mitrea, M.E. Bogovskiĭ, M.E. Taylor, M.E. Taylor, M.E. Taylor, Martin Costabel, P. Grisvard, R. Hiptmair   +15 more
core   +2 more sources

The Loewner–Kufarev energy and foliations by Weil–Petersson quasicircles

Proceedings of the London Mathematical Society, Volume 128, Issue 2, February 2024.
Abstract We study foliations by chord–arc Jordan curves of the twice punctured Riemann sphere C∖{0}$\mathbb {C} \setminus \lbrace 0\rbrace$ using the Loewner–Kufarev equation. We associate to such a foliation a function on the plane that describes the “local winding” along each leaf. Our main theorem is that this function has finite Dirichlet energy if
Fredrik Viklund, Yilin Wang
wiley   +1 more source

The radius of convexity of certain analytic functions II

International Journal of Mathematics and Mathematical Sciences, 1980
In [2], MacGregor found the radius of convexity of the functions f(z)=z+a2z2+a3z3+…, analytic and univalent such that |f′(z)−1|
J. S. Ratti
doaj   +1 more source

Laplacian spectral determination of path-friendship graphs

AKCE International Journal of Graphs and Combinatorics, 2021
A graph G is said to be determined by the spectrum of its Laplacian matrix (DLS) if every graph with the same spectrum is isomorphic to G. In some recent papers it is proved that the friendship graphs and starlike trees are DLS. If a friendship graph and
Mohammad Reza Oboudi, Ali Zeydi Abdian, Ali Reza Ashrafi, Lowell W. Beineke   +3 more
doaj   +1 more source

Hankel Determinants for the Logarithmic Coefficients of a Subclass of Close‐to‐Star Functions

Journal of Mathematics, Volume 2024, Issue 1, 2024.
Suppose that ST1 is a class of close‐to‐star functions. In this paper, we investigated the estimate of Zalcman functional on the logarithmic coefficients and the third Hankel determinant for the class ST1 with the determinant entry of logarithmic coefficients.
Dong Guo, Huo Tang, Jun Zhang, Qingbing Xu, Zongtao Li, Predrag S. Stanimirović   +5 more
wiley   +1 more source

Bazilevic functions of type β

International Journal of Mathematics and Mathematical Sciences, 1982
In this paper, a new coefficient result for the Bazileviĉ functions of type β is obtained.
K. Inayat Noor
doaj   +1 more source