Results 1 to 10 of about 434,846 (155)

Quadratic Forms in Random Matrices with Applications in Spectrum Sensing [PDF]

Entropy
Quadratic forms with random kernel matrices are ubiquitous in applications of multivariate statistics, ranging from signal processing to time series analysis, biomedical systems design, wireless communications performance analysis, and other fields ...
Daniel Gaetano Riviello, Giusi Alfano, Roberto Garello   +2 more
doaj   +2 more sources

Euclidean-Lorentzian Dichotomy and Algebraic Causality in Finite Ring Continuum [PDF]

Entropy
We present a concise and self-contained extension of the Finite Ring Continuum (FRC) program, showing that symmetry-complete prime shells Fp with p=4t+1 exhibit a fundamental Euclidean-Lorentzian dichotomy.
Yosef Akhtman
doaj   +2 more sources

Remarks on Limit Theorems for the Free Quadratic Forms [PDF]

Entropy
In 2021, Ejsmont and Biernacki showed that the free tangent distribution can be used to measure household satisfaction with durable consumer goods. This distribution arises as the limit of free random variables.
Wiktor Ejsmont, Marek Biernacki, Patrycja Hęćka   +2 more
doaj   +2 more sources

K-theories and Free Inductive Graded Rings in Abstract Quadratic Forms Theories [PDF]

Categories and General Algebraic Structures with Applications, 2022
We build on previous work on multirings ([17]) that providesgeneralizations of the available abstract quadratic forms theories (specialgroups and real semigroups) to the context of multirings ([10], [14]).
Kaique Roberto, Hugo Mariano
doaj   +1 more source

Highly reliable two-factor biometric authentication based on handwritten and voice passwords using flexible neural networks [PDF]

Компьютерная оптика, 2020
The paper addresses a problem of highly reliable biometric authentication based on converters of secret biometric images into a long key or password, as well as their testing on relatively small samples (thousands of images).
Alexey Sulavko
doaj   +1 more source

Random quadratic forms [PDF]

Transactions of the American Mathematical Society, 1995
The results of Boyce for random Sturm-Liouville problems are generalized to random quadratic forms. Order relationships are proved between the means of eigenvalues of a random quadratic form and the eigenvalues of an associated mean quadratic form. Finite-dimensional and infinite-dimensional examples that show these are the best possible results are ...
Gregory, John, Hughes, H. R.
openaire   +2 more sources

Higher spins, quadratic forms and amplitudes

Journal of High Energy Physics, 2020
The light-cone Hamiltonians for spin 1 and spin 2 fields, describing both the pure and the maximally supersymmetric theories, may be expressed as quadratic forms. In this paper, we show that this feature extends to light-cone higher spin theories.
Sudarshan Ananth, Chetan Pandey, Saurabh Pant   +2 more
doaj   +1 more source

On the Moment Problem and Related Problems

Mathematics, 2021
Firstly, we recall the classical moment problem and some basic results related to it. By its formulation, this is an inverse problem: being given a sequence (yj)j∈ℕn  of real numbers and a closed subset F⊆ℝn, n∈{1,2,…}, find a positive regular Borel ...
Octav Olteanu
doaj   +1 more source

An Introduction to some Methods for Solving A Large System Linear Neutrosophic Equations [PDF]

Neutrosophic Sets and Systems, 2023
This paper aims to extend the methods of steepest descent and conjugate directions to the neutrosophic field R(I). the generalizations were built similarly to the classic algorithms, starting by generalizing the quadratic forms to R(I).
Azzam Mustafa Nouri
doaj   +1 more source

Polynomial Approximation on Unbounded Subsets, Markov Moment Problem and Other Applications

Mathematics, 2020
This paper starts by recalling the author’s results on polynomial approximation over a Cartesian product A of closed unbounded intervals and its applications to solving Markov moment problems.
Octav Olteanu
doaj   +1 more source