Allen, Robert F. Colonna, Flavia Easley, Glenn R.
Published in
Mediterranean Journal of Mathematics

We introduce a class of iterated logarithmic Lipschitz spaces \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal{L}^{(k)}, k \in \mathbb{N}}$$\end{document} , on...

Allen, Robert F. Colonna, Flavia
Published in
Integral Equations and Operator Theory

Let D be a bounded homogeneous domain in ℂn. In this paper, we study the bounded and the compact weighted composition operators mapping the Hardy space H∞(D) into the Bloch space of D. We characterize the bounded weighted composition operators, provide operator norm estimates, and give sufficient conditions for compactness. We prove that these cond...

Koch, U. Radtke, F.
Published in
Cellular and Molecular Life Sciences

The highly conserved Notch signaling pathway plays pleiotropic roles during embryonic development and is important for the regulation of selfrenewing tissues. The physiological functions of this signaling cascade range from stem cell maintenance and influencing cell fate decisions of barely differentiated progenitor cells, to the induction of termi...

Koch, U. Radtke, F.
Published in
Cellular and Molecular Life Sciences

Mrowka, Tomasz S. Wehrheim, Katrin
Published in
Geometric and Functional Analysis

We examine the L2-topology of the gauge orbits over a closed Riemann surface. We prove a subtle local slice theorem based on the div-curl lemma of harmonic analysis, and deduce local pathwise connectedness of the gauge orbits. Based on a quantitative version of the connectivity, we generalize compactness results for anti-self-dual instantons with L...

Niemeyer, Alice C. Pannek, Sabina B. Praeger, Cheryl E.
Published in
Archiv der Mathematik

We call an element of a finite general linear group GL(d, q) fat if it leaves invariant and acts irreducibly on a subspace of dimension greater than d/2. Fatness of an element can be decided efficiently in practice by testing whether its characteristic polynomial has an irreducible factor of degree greater than d/2. We show that for groups G with S...

McLaughlin, James Sills, Andrew V.
Published in
Annals of Combinatorics

Using a pair of two variable series-product identities recorded by Ramanujan in the lost notebook as inspiration, we find some new identities of similar type. Each identity immediately implies an infinite family of Rogers-Ramanujan type identities, some of which are well-known identities from the literature. We also use these identities to derive s...

Piña, E. Lonngi, P.
Published in
Qualitative Theory of Dynamical Systems

The Newtonian Four-Body Problem with positive and negative gravitational charges is studied from a physical point of view that considers inertial masses that are always positive and positive or negative charges in the gravitational interaction forces. The difference with respect to the differential equation of motion used in several mathematical pa...

Ball, Joseph A. Bolotnikov, Vladimir ter Horst, Sanne
Published in
Integral Equations and Operator Theory

Following ideas from the Abstract Interpolation Problem of Katsnelson et al. (Operators in spaces of functions and problems in function theory, vol 146, pp 83–96, Naukova Dumka, Kiev, 1987) for Schur class functions, we study a general metric constrained interpolation problem for functions from a vector-valued de Branges–Rovnyak space \documentclas...

Bader, Uri Frances, Charles Melnick, Karin
Published in
Geometric and Functional Analysis

We study the automorphism group of a Cartan geometry, and prove an embedding theorem analogous to a result of Zimmer for automorphism groups of G-structures. Our embedding theorem leads to general upper bounds on the real rank or nilpotence degree of a Lie subgroup of the automorphism group. We prove that if the maximal real rank is attained in the...