Results 101 to 110 of about 23,180 (297)

Degree Reduction of Algebraic Surfaces

open access: yes, 2008
This paper presents an algorithm for algebraic surface degree reduction. This approach uses the Bernstein-B'ezier representation of algebraic surfaces to apply well-known B'ezier surface degree reduction algorithms to algebraic surface patches.
Maxime Froumentin
core  

Varieties and algebraic algebras of bounded degree

open access: yesJournal of Pure and Applied Algebra, 1998
The main result is that any proper variety \(V\) of associative algebras over a characteristic zero base field \(F\) is generated by an algebraic algebra of bounded degree over some commutative algebra. Moreover, \(V\) is generated by an algebraic algebra of bounded degree over a field if and only if \(V\) is generated by some finite dimensional ...
openaire   +1 more source

Generic algebras with involution of degree 8m

open access: yesJournal of Algebra, 2002
The centers of the generic central simple algebras with involution are interesting objects in the theory of central simple algebras. These fields also arise as invariant fields for linear actions of projective orthogonal or symplectic groups. In this paper, we prove that when the characteristic is not 2, these fields are retract rational, in the case ...
Saltman, David J., Tignol, Jean-Pierre
openaire   +2 more sources

Computation of General Inner-Outer and Spectral Factorizations

open access: yes, 2000
In this paper, we solve two problems in linear systems theory: the computation of the inner-outer and spectral factorizations of a continuous-time system considered in the most general setting.
Varga, A., Oara, C.
core  

Algebraic limit cycles of degree 4 for quadratic systems

open access: yes, 2004
Yablonskii (Differential Equations 2 (1996) 335) and Filipstov (Differential Equations 9 (1973) 983) proved the existence of two different families of algebraic limit cycles of degree 4 in the class of quadratic systems. It was an open problem to know if
Jaume Llibre   +5 more
core   +1 more source

Algebraic multiplicity and topological degree for Fredholm operators

open access: yes, 2020
Artículo dedicado a Shair Ahmad para conmemorar su 85 aniversario.This paper tries to establish a link between topological and algebraic methods in nonlinear analysis showing how the topological degree for Fredholm operators of index zero of Fitzpatrick,
Sampedro Pascual, Juan Carlos   +1 more
core   +1 more source

Overcoming the Nyquist Limit in Molecular Hyperspectral Imaging by Reinforcement Learning

open access: yesAdvanced Intelligent Discovery, EarlyView.
Explorative spectral acquisition guide automatically selects informative spectral bands to optimize downstream tasks, outperforming full‐spectrum acquisition. The selected hyperspectral data are used for tasks such as unmixing and segmentation. BandOptiNet encodes selection states and outputs optimal bands to guide spectral acquisition. Recent advances
Xiaobin Tang   +4 more
wiley   +1 more source

Construction of highly nonlinear Boolean functions with four-valued and five-valued spectra

open access: yesTongxin xuebao
Boolean functions with four-valued and five-valued spectra are of special interest for cryptography applications. By modifying bent functions in the Maiorana-McFarland class, a construction of Boolean functions on even numbers of variables with four ...
GUO Fei, WANG Zilong, DUAN Ming
doaj  

It Is Better to Be Semi-Regular When You Have a Low Degree

open access: yesEntropy
We study the algebraic connectivity for several classes of random semi-regular graphs. For large random semi-regular bipartite graphs, we explicitly compute both their algebraic connectivity as well as the full spectrum distribution. For an integer d∈3,7,
Theodore Kolokolnikov
doaj   +1 more source

Algebraic degree of the inverse of linearized polynomials

open access: yes, 2008
The inverse of linearized polynomials might be a good candidate of vector Boolean functions for cryptographic applications since it is a generalization of the inverse function that is widely used in cryptographic primitives.
Lee, Dong Hoon
core   +1 more source

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