Results 21 to 30 of about 49,024 (304)

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

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

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

Linear Hamiltonian behaviors and bilinear differential forms [PDF]

open access: yes, 2004
We study linear Hamiltonian systems using bilinear and quadratic differential forms. Such a representation-free approach allows us to use the same concepts and techniques to deal with systems isolated from their environment and with systems subject to ...
Rapisarda, P.   +7 more
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

State Space Modeling with Non-Negativity Constraints Using Quadratic Forms

open access: yesMathematics, 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
doaj   +1 more source

An Accurate Approximation to the Distribution of a Linear Combination of Non-Central Chi-Square Random Variables

open access: yesRevstat 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

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