Results 21 to 30 of about 434,965 (273)

An Overview of the Pathway Idea and Its Applications in Statistical and Physical Sciences

open access: yesAxioms, 2015
Pathway idea is a switching mechanism by which one can go from one functional form to another, and to yet another. It is shown that through a parameter α, called the pathway parameter, one can connect generalized type-1 beta family of densities ...
Nicy Sebastian   +2 more
doaj   +1 more source

Annihilating polynomials for quadratic forms

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
This is a short survey of the main known results concerning annihilating polynomials for the Witt ring of quadratic forms over a field.
David W. Lewis
doaj   +1 more source

Derived Hyperstructures from Hyperconics

open access: yesMathematics, 2020
In this paper, we introduce generalized quadratic forms and hyperconics over quotient hyperfields as a generalization of the notion of conics on fields.
Vahid Vahedi   +5 more
doaj   +1 more source

Solubility of Systems of Quadratic Forms [PDF]

open access: yes, 1997
We derive an upper bound for the least number of variables needed to guarantee that a system of t quadratic forms (t>=2) over a field F has a nontrivial zero.
Martin, Greg
core   +2 more sources

When Flexible Forms Are Asked to Flex Too Much

open access: yesJournal of Agricultural and Resource Economics, 1994
Taylor series-based flexible forms cannot be interpreted as Taylor series approximations unless all data used in estimation lie in a region of convergence.
Paul J. Driscoll
doaj   +1 more source

Euclidean Quadratic Forms and ADC Forms I [PDF]

open access: yes, 2011
Motivated by classical results of Aubry, Davenport and Cassels, we define the notion of a Euclidean quadratic form over a normed integral domain and an ADC form over an integral domain.
Clark, Pete L.
core   +4 more sources

Inductive graded rings, hyperfields and quadratic forms [PDF]

open access: yesCategories and General Algebraic Structures with Applications
In [6] we developed a k-theory for the category of hyperbolic hyperfields (a category that contains a copy of the category of (pre)special groups): this construction extends, simultaneously, Milnor's k-theory ([20]) and Dickmann-Miraglia's k-theory ([13])
Kaique Roberto, Hugo Mariano
doaj   +1 more source

Beamforming Using Exact Evaluation of Leakage and Ergodic Capacity of MU-MIMO System

open access: yesSensors, 2021
Closed-form evaluation of key performance indicators (KPIs) of telecommunication networks help perform mathematical analysis under several network configurations.
Ahmad Kamal Hassan, Muhammad Moinuddin
doaj   +1 more source

Saddlepoint approximations for noncentral quadratic forms [PDF]

open access: yes, 1998
Many estimators and tests are of the form of a ratio of quadratic forms in normal variables. Excepting a few very special cases little is known about the density or distribution of these ratios, particularly if we allow for noncentrality in the quadratic
Marsh, P.W.N.
core   +1 more source

Some remarks on duality and optimality of a class of constrained convex quadratic minimization problems [PDF]

open access: yesYugoslav Journal of Operations Research, 2017
In this paper the duality and optimality of a class of constrained convex quadratic optimization problems have been studied. Furthermore, the global optimality condition of a class of interval quadratic minimization problems has also been ...
Roy Sudipta   +2 more
doaj   +1 more source

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