Results 71 to 80 of about 4,080,638 (238)

Bayesian Inference for Joint Estimation Models Using Copulas to Handle Endogenous Regressors

Oxford Bulletin of Economics and Statistics, Volume 88, Issue 3, Page 519-534, June 2026.
ABSTRACT This study proposes a Bayesian approach for finite‐sample inference of the Gaussian copula endogeneity correction. Extant studies use frequentist inference, build on a priori computed estimates of marginal distributions of explanatory variables, and use bootstrapping to obtain standard errors. The proposed Bayesian approach facilitates precise
Rouven E. Haschka
wiley   +1 more source

Harada's conjecture II for the finite general linear groups and unitary groups [PDF]

International Journal of Group Theory
K. Harada conjectured for any finite group $G$, the product of sizes of all conjugacy classes is divisible by the product of degrees of all irreducible characters. We study this conjecture when $G$ is the general linear group over a finite field. We show
Masahiro Sugimoto
doaj   +1 more source

An extended definition of Anosov representation for relatively hyperbolic groups

Journal of Topology, Volume 19, Issue 2, June 2026.
Abstract We define a new family of discrete representations of relatively hyperbolic groups which unifies many existing definitions and examples of geometrically finite behavior in higher rank. The definition includes the relative Anosov representations defined by Kapovich–Leeb and Zhu, and Zhu–Zimmer, as well as holonomy representations of various ...
Theodore Weisman
wiley   +1 more source

A Tree‐Based Model for Addressing Sparsity and Taxa Covariance in Microbiome Compositional Count Data

Statistics in Medicine, Volume 45, Issue 10-12, May 2026.
ABSTRACT Microbiome compositional data are often high‐dimensional, sparse, and exhibit pervasive cross‐sample heterogeneity. We introduce the “logistic‐tree normal” (LTN) model, a generative model that allows flexible covariance among the microbiome taxa, enables scalable computation, and effectively captures other key characteristics of microbiome ...
Zhuoqun Wang, Jialiang Mao, Li Ma
wiley   +1 more source

Twisted conjugacy classes in nilpotent groups [PDF]

Journal für die reine und angewandte Mathematik (Crelles Journal), 2009
22 pages; section 6 has been moved to section 2 and minor modification has been made on exposition; to be published in Crelle ...
Gonçalves, Daciberg, Wong, Peter
openaire   +3 more sources

Reflection factorizations of Singer cycles [PDF]

Discrete Mathematics & Theoretical Computer Science, 2014
The number of shortest factorizations into reflections for a Singer cycle in $GL_n(\mathbb{F}_q)$ is shown to be $(q^n-1)^{n-1}$. Formulas counting factorizations of any length, and counting those with reflections of fixed conjugacy classes are also ...
J.B. Lewis, V. Reiner, D. Stanton
doaj   +1 more source

Classification of periodic transformations of an orientable surface of genus two

Журнал Средневолжского математического общества, 2021
In this paper, we find all admissible topological conjugacy classes of periodic transformations of a two-dimensional surface of genus two. It is proved that there are exactly seventeen pairwise topologically non-conjugate orientation-preserving periodic ...
Baranov Denis A., Pochinka Olga V.
doaj   +1 more source

On the finite generation of ideals in tensor triangular geometry

Bulletin of the London Mathematical Society, Volume 58, Issue 5, May 2026.
Abstract Inspired by Cohen's characterization of Noetherian commutative rings, we study the finite generation of ideals in tensor triangular geometry. In particular, for an essentially small tensor triangulated category K$\mathcal {K}$ with weakly Noetherian spectrum, we show that every prime ideal in K$\mathcal {K}$ can be generated by finitely many ...
Tobias Barthel
wiley   +1 more source

GROUPS WITH SMALL CONJUGACY CLASSES

Tamkang Journal of Mathematics, 1999
A group satisfies property (*) iff every conjugacy class has size not greater than 2. This paper proves properties of this type of group and conclude that it is a central product of an abelian group with 2-groups that are "almost" extra special.
How, G. A., Chuang, F. C.
openaire   +3 more sources

Conjugacy classes and straight elements in Coxeter groups [PDF]

, 2013
. As a byproduct of our methods, we also obtain a characterisation of straight elements of W, namely of those elements w∈W for which l(wn)=nl(w) for any n∈Z. In particular, we generalise previous characterisations of straight elements within the class of
T. Marquis
semanticscholar   +1 more source