A class of symmetric biadditive functionals.
A classification of rank 6 quadratic spaces via pfaffians.
A classification of two-peak sincere posets of finite prinjective type and their sincere prinjective representations
Assume that K is an arbitrary field. Let (I, ⪯) be a two-peak poset of finite prinjective type and let KI be the incidence algebra of I. We study sincere posets I and sincere prinjective modules over KI. The complete set of all sincere two-peak posets of finite prinjective type is given in Theorem 3.1. Moreover, for each such poset I, a complete set of representatives of isomorphism classes of sincere indecomposable prinjective modules over KI is presented in Tables 8.1.
A family of symmetric biadditive nonbilinear functions.
A functional equation for quadratic forms.
A Gram-Schmidt orthogonalizing process of design matrices in linear models as an estimating procedure of covariance components.
Se considera un modelo lineal mixto multivariante equilibrado sin interacción para el que las matrices de las formas cuadráticas necesarias para estimar la covarianza de las componentes se expresan mediante operadores lineales en espacios con producto interior de dimensión finita. El propósito de este artículo es demostrar que las formas cuadráticas obtenidas por el proceso de ortogonalización de Gram-Schmidt de las matrices de diseño son combinaciones lineales de las formas cuadráticas derivadas...
A Local-Global Principle for Quadric Forms.
A note on consecutive ones in a binary matrix.
A remark on the quadratic analogue of the Quillen-Suslin theorem.
A simple proof of polar decomposition in pseudo-Euclidean geometry
We give a simple direct proof of the polar decomposition for separated linear maps in pseudo-Euclidean geometry.
A Simple Proof of the Convexity of the Field of Values Defined by Two Hermitian Forms.
Adjunctions in Monoidal categories.
Algebras whose Euler form is non-negative
Algorithmes de calcul du maximum des formes quadratiques sur la boule unité de la norme du maximum.
Almost-orthonormal vector systems.
An Abstract Treatment of the Module of Quadratic Forms over a Semi-local Ring.
An inequality in Euclidean spaces.
Analytical representation of ellipses in the Aitchison geometry and its application
Compositional data, multivariate observations that hold only relative information, need a special treatment while performing statistical analysis, with respect to the simplex as their sample space ([Aitchison, J.: The Statistical Analysis of Compositional Data. Chapman and Hall, London, 1986.], [Aitchison, J., Greenacre, M.: Biplots of compositional data. Applied Statistics 51 (2002), 375–392.], [Buccianti, A., Mateu-Figueras, G., Pawlowsky-Glahn, V. (eds): Compositional data analysis in the geosciences:...
Anisotropic complex structure on the pseudo-Euclidean Hurwitz pairs
The concept of supercomplex structure is introduced in the pseudo-Euclidean Hurwitz pairs and its basic algebraic and geometric properties are described, e.g. a necessary and sufficient condition for the existence of such a structure is found.
Annuallatoren von Pfisterformen über semilokalen Ringen.