Results 61 to 70 of about 2,801,507 (197)

Invariants for quadratic forms [PDF]

open access: yes, 1973
Simple systems of invariants for rational and integral quadratic forms are given, and those for rational forms are proved complete in an elementary way. Some noninvariants of quadratic forms appear, but are not concerned with invariants of objects other ...
Conway, J.H
core   +1 more source

Integrating Products of Quadratic Forms

open access: yesDiscrete & Computational Geometry, 2023
15 ...
openaire   +4 more sources

Generating functions and short recursions, with applications to the moments of quadratic forms in noncentral normal vectors [PDF]

open access: yes
Using generating functions, the top-order zonal polynomials that occur in much distribution theory under normality can be recursively related to other symmetric functions (power-sum and elementary symmetric functions, Ruben, Hillier, Kan, and Wang ...
Grant Hillier, Xiaolu Wang, Raymond Kan
core  

Spatial design matrices and associated quadratic forms: structure and properties [PDF]

open access: yes
The paper provides significant simplifications and extensions of results obtained by Gorsich, Genton, and Strang (J. Multivariate Anal. 80 (2002) 138) on the structure of spatial design matrices.
Hillier, Grant, Martellosio, Federico
core   +2 more sources

Subordinate Quadratic Forms and Their Complementary Forms [PDF]

open access: yesProceedings of the National Academy of Sciences, 1971
Theorem 1. For α, β on the range 1,..., μ, let Q ( z ) = * a αβ z α z β be a real valued ...
openaire   +4 more sources

The Exact Cumulative Distribution Function of a Ratio of Quadratic Forms in Normal Variables with Application to the AR(1) Model. [PDF]

open access: yes
Often neither the exact density nor the exact cumulative distribution function (CDF) of a statistic of interest are available in the statistics and econometrics literature (for example the maximum likelihood estimator of the autocorrelation coefficient ...
Giovanni Forchini
core  

Binary quadratic forms and genus theory [PDF]

open access: yes, 2013
The study of binary quadratic forms arose as a natural generalization of questions about the integers posed by the ancient Greeks. A major milestone of understanding occurred with the publication of Gauss's Disquisitiones Arithmeticae in 1801 in which ...
NC DOCKS at The University of North Carolina at Greensboro   +1 more
core  

Semicrosses and quadratic forms

open access: yesEuropean Journal of Combinatorics, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Central limit theorems for weighted quadratic forms of dependent processes with applications in specification testing [PDF]

open access: yes
In this paper, we establish some new central limit theorems for generalized U-statistics of dependent processes under some mild conditions. Such central limit theorems complement existing existing results available from both the econometrics literature ...
Gao, Jiti, Hong, Yongmiao
core  

Remember Gerardas Žilinskas

open access: yesLietuvos Matematikos Rinkinys, 2010
Reminescences about the doctoral studies of G. Žilinskas at the Manchester University and his work at Vilnius University.
Jonas Kubilius
doaj   +1 more source

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