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This is a survey article for "Handbook of Linear Algebra", 2nd ed., Chapman & Hall/CRC, 2014. An informal introduction to representations of quivers and finite dimensional algebras from a linear algebraist's point of view is given. The…

Representation Theory · Mathematics 2013-12-31 Roger A. Horn , Vladimir V. Sergeichuk

We introduce Poisson double algebroids, and the equivalent concept of double Lie bialgebroid, which arise as second-order infinitesimal counterparts of Poisson double groupoids. We develop their underlying Lie theory, showing how these…

Symplectic Geometry · Mathematics 2022-07-14 Henrique Bursztyn , Alejandro Cabrera , Matias del Hoyo

We introduce a factor analysis model that summarizes the dependencies between observed variable groups, instead of dependencies between individual variables as standard factor analysis does. A group may correspond to one view of the same…

Machine Learning · Statistics 2014-11-19 Seppo Virtanen , Arto Klami , Suleiman A. Khan , Samuel Kaski

This is an expository and introductory note on some results obtained in "Coisotropic embeddings in Poisson manifolds" (ArXiv math/0611480). Some original material is contained in the last two sections, where we consider linear Poisson…

Symplectic Geometry · Mathematics 2008-04-15 Alberto S. Cattaneo , Marco Zambon

A novel approach for creating ER conceptual models and an algorithm for transforming them to the relational model has been developed by modifying and extending the existing methods. A part of the new algorithm has previously been presented.…

Databases · Computer Science 2013-07-18 Dhammika Pieris

Discussion of "Cross-Covariance Functions for Multivariate Geostatistics" by Genton and Kleiber [arXiv:1507.08017].

Methodology · Statistics 2015-07-31 Moreno Bevilacqua , Amanda S. Hering , Emilio Porcu

In this paper, we will present several new congruences involving binomial coefficients under integer moduli, which are the continuation of the previous two work by Cai \textit{et al.} (2002, 2007).

Number Theory · Mathematics 2016-04-05 Hao Zhong , Shane Chern , Tianxin Cai

Models characterized by autoregressive structure and random coefficients are powerful tools for the analysis of high-frequency, high-dimensional and volatile time series. The available literature on such models is broad, but also sectorial,…

Methodology · Statistics 2020-09-18 Marta Regis , Paulo Serra , Edwin R. van den Heuvel

Regression plays a key role in many research areas and its variable selection is a classic and major problem. This study emphasizes cost of predictors to be purchased for future use, when we select a subset of them. Its economic aspect is…

Methodology · Statistics 2021-03-19 Steven N. MacEachern , Koji Miyawaki

We address the problem of providing inference from a Bayesian perspective for parameters selected after viewing the data. We present a Bayesian framework for providing inference for selected parameters, based on the observation that…

Computation · Statistics 2015-03-13 Daniel Yekutieli

When prior information is lacking, the go-to strategy for probabilistic inference is to combine a "default prior" and the likelihood via Bayes's theorem. Objective Bayes, (generalized) fiducial inference, etc. fall under this umbrella. This…

Methodology · Statistics 2026-01-05 Ryan Martin

The present review presents the authors previous results on the topic from the title in a new light. Most of the previous results were obtained using the techniques of antilinear Hilbert-Schmidt mappings of one Hilbert pace into another,…

Mathematical Physics · Physics 2014-10-21 Fedor Herbut

In this note a characterization of anallytically Riesz operators is given. This work completes the article [1].

Functional Analysis · Mathematics 2015-07-21 Enrico Boasso

Discussion of "Statistical Inference: The Big Picture" by R. E. Kass [arXiv:1106.2895]

Methodology · Statistics 2011-06-17 Andrew Gelman

Discussion of ``Breakdown and groups'' by P. L. Davies and U. Gather [math.ST/0508497]

Statistics Theory · Mathematics 2007-06-13 David E. Tyler

Discussion of ``Breakdown and groups'' by P. L. Davies and U. Gather [math.ST/0508497]

Statistics Theory · Mathematics 2007-06-13 Peter J. Rousseeuw

Discussion of ``Breakdown and groups'' by P. L. Davies and U. Gather [math.ST/0508497]

Statistics Theory · Mathematics 2007-06-13 Hannu Oja

Discussion of ``Breakdown and groups'' by P. L. Davies and U. Gather [math.ST/0508497]

Statistics Theory · Mathematics 2007-06-13 Xuming He

Discussion of ``Breakdown and groups'' by P. L. Davies and U. Gather [math.ST/0508497]

Statistics Theory · Mathematics 2007-06-13 Frank Hampel

Discussion of ``Breakdown and groups'' by P. L. Davies and U. Gather [math.ST/0508497]

Statistics Theory · Mathematics 2007-06-13 Marc G. Genton , Andre Lucas