Results 31 to 40 of about 2,801,507 (197)

Quadratic Forms

, 2023
Kvadratna forma je homogeni polinom drugog stupnja od n varijabli, gdje je n ∈ N. U ovom radu bavit ćemo se kvadratnim formama za koje je n = 2 i n = 3, tj. binarnim i ternarnim kvadratnim formama. Najprije ćemo uvesti pojam kvadratnih formi te ćemo se
Vomš, Martina
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An Accurate Approximation to the Distribution of a Linear Combination of Non-Central Chi-Square Random Variables

Revstat Statistical Journal, 2013
This paper provides an accessible methodology for approximating the distribution of a general linear combination of non-central chi-square random variables. Attention is focused on the main application of the results, namely the distribution of positive
Hyung-Tae Ha
doaj   +1 more source

State Space Modeling with Non-Negativity Constraints Using Quadratic Forms

Mathematics, 2021
State space model representation is widely used for the estimation of nonobservable (hidden) random variables when noisy observations of the associated stochastic process are available.
Ourania Theodosiadou, George Tsaklidis
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On certain relations among the generating functions for certain quadratic forms [PDF]

Notes on Number Theory and Discrete Mathematics
The object of this article is to establish the relation between the generating function of the quadratic form 2m²+2mn+3n² and the generating functions for the quadratic forms m²+mn+n², m²+mn+2n², m²+mn+4n² and 2m²+mn+2n².
K. R. Vasuki, P. Nagendra
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Intersecting semi-disks and the synergy of three quadratic forms

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019
In this paper, we study the Diophantine equation x2 = n2 + mn + np + 2mp with m, n, p, and x being natural numbers. This equation arises from a geometry problem and it leads to representations of primes by each of the three quadratic forms: a2 + b2, a2 +
Ionaşcu Andrew D.
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Conserved- and zero-mean quadratic quantities in oscillatory systems

, 2005
We study quadratic functionals of the variables of a linear oscillatory system and their derivatives. We show that such functionals are partitioned in conserved quantities and in trivially- and intrinsic zero-mean quantities.
Willems, JC, Rapisarda, P, Willems, Jan C., Rapisarda, Paolo   +3 more
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Enumeration of quadratic forms over totally real fields [PDF]

, 2012
Let F be a real quadratic field with OF its ring of integers. Let f be a quadratic form over F with discriminant D. Using Koecher Theory and the generalized Voronoï Algorithm, we show that there are finitely many quadratic forms with discriminant D over ...
Hamby, Paula J., NC DOCKS at The University of North Carolina at Greensboro   +1 more
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ON WEIGHTED GENERALIZED FUNCTIONS ASSOCIATED WITH QUADRATIC FORMS

Проблемы анализа, 2016
In this article we consider certain types of weighted generalized functions associated with nondegenerate quadratic forms. Such functions and their derivatives are used for constructing fundamental solutions of iterated ultra-hyperbolic equations with ...
E. L. Shishkina
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Some functional equations connected with quadratic forms

Journal of Numerical Analysis and Approximation Theory, 1990
Not available.
I. Corovei
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An algebraic approach to the Siegel-Weil average for binary quadratic forms [PDF]

, 2019
In this talk, we will consider the celebrated results of Siegel and Weil about the number of representations by the genus of a given positivedefinite integral quadratic form.
Kane, BR
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