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In this paper, we determine necessary and sufficient conditions for the generalized Bessel function to be in certain subclasses of starlike and convex functions. Also, we obtain several corollaries as special cases of the main results,…

Complex Variables · Mathematics 2017-12-06 Rabha M. El-Ashwah , Alaa H. El-Qadeem

We give an elementary characterization of rational functions among meromorphic functions in the complex plane.

Complex Variables · Mathematics 2017-12-13 Bao Qin Li

We characterize which graph parameters are partition functions of a vertex model over an algebraically closed field of characteristic 0 (in the sense of de la Harpe and Jones). We moreover characterize when the vertex model can be taken so…

Combinatorics · Mathematics 2011-02-25 Jan Draisma , Dion Gijswijt , László Lovász , Guus Regts , Alexander Schrijver

We establish three major fixed-point theorems for functions satisfying an odd power type contractive condition in G-metric spaces. We first consider the case of a single mapping, followed by that of a triplet of mappings and we conclude by…

General Topology · Mathematics 2017-09-25 Yaé Ulrich Gaba , Collins Amburo Agyingi

We characterize completely the Gneiting class of space-time covariance functions and give more relaxed conditions on the involved functions. We then show necessary conditions for the construction of compactly supported functions of the…

Methodology · Statistics 2009-02-24 Viktor P. Zastavnyi , Emilio Porcu

Recently we have shown a structure theorem for locally compact groups of polynomial growth. We give now some applications on various growth functions and relations to FC-G - series. In addition, we show some results on related classes of…

Group Theory · Mathematics 2021-04-27 Viktor Losert

We develop methodology for the estimation of the functional mean and the functional principal components when the functions form a spatial process. The data consist of curves $X(\mathbf{s}_k;t),t\in[0,T],$ observed at spatial locations…

Applications · Statistics 2012-06-29 Oleksandr Gromenko , Piotr Kokoszka , Lie Zhu , Jan Sojka

Three spheres type theorem is proved for the p-harmonic functions defined on the complement of k-balls in the Euclidean n-dimensional space.

Analysis of PDEs · Mathematics 2010-02-24 Vladimir M. Miklyukov , Antti Rasila , Matti Vuorinen

We prove that convex functions on a $C_b(X)$ space satisfying a mild continuity condition can be represented using sigma additive measures. This generalises a result of Cheridito, Kupper and Tangpi,

Functional Analysis · Mathematics 2022-09-20 Freddy Delbaen

Under certain conditions, we obtain sharp bounds on some functionals defined in the coefficient space of starlike functions. It has been found that the functionals are closely associated with certain coefficient problems, which are of…

Complex Variables · Mathematics 2009-10-23 K. O. Babalola

In this paper, we introduce and explore a new class of topological spaces termed as SC*-normal spaces, defined via SC*-open sets. The concept of SC*-normality is analyzed in relation to classical notions such as normal spaces and g-normal…

General Topology · Mathematics 2025-05-13 Neeraj Kumar Tomar , Fahed Zulfeqarr , M. C. Sharma

In this short note we present a generating function computing the compactly supported Euler characteristic $\chi_c(F(X, n), K^{\boxtimes n})$ of the configuration spaces on a topologically stratified space $X$, with $K$ a constructible…

Algebraic Topology · Mathematics 2023-04-21 Louis Hainaut

We continue to investigate applications of $k$-covers in function spaces with the compact-open topology.

General Topology · Mathematics 2018-05-14 Alexander V. Osipov

The problem of characterizing normed ordered spaces which admit a representation in the algebraic, order and norm sense as a subspace of $C(X)$, the space of all continuous functions on a compact Hausdorff space is a classical problem that…

Functional Analysis · Mathematics 2026-03-30 Serdar Ay

The embedding theorem arises in several problems from analysis and geometry. The purpose of this paper is to provide a deeper understanding of analysis and geometry with a particular focus on embedding theorems on spaces of homogeneous type…

Classical Analysis and ODEs · Mathematics 2016-01-25 Yanchang Han , Yongsheng Han , Ji Li

In this paper, we generalize some halfspace type theorems for self-shrinkers of codimension 1 to the case of arbitrary codimension.

Differential Geometry · Mathematics 2022-02-23 Doan The Hieu , Nguyen Thi My Duyen

We provide sufficient conditions on the components of a vector field, which ensure the existence of Dulac functions depending on special functions for such vector field. We also present some applications and examples in order to illustrate…

Classical Analysis and ODEs · Mathematics 2015-02-17 Osuna Osvaldo , Rodríguez-Ceballos Joel , Vargas-De-León Cruz , Villaseñor-Aguilar Gabriel

When given a class of functions and a finite collection of sets, one might be interested whether the class in question contains any function whose domain is a subset of the union of the sets of the given collection and whose restrictions to…

Logic · Mathematics 2019-03-14 Dimiter Skordev

We define a characteristic function for probability measures on the signatures of geometric rough paths. We determine sufficient conditions under which a random variable is uniquely determined by its expected signature, thus partially…

Probability · Mathematics 2017-05-19 Ilya Chevyrev , Terry Lyons

We prove the geometric Bogomolov conjecture over a function field of characteristic zero.

Algebraic Geometry · Mathematics 2023-02-22 Serge Cantat , Ziyang Gao , Philipp Habegger , Junyi Xie