-matrices, discrepancy and preservers
Let and be positive integers, and let and be nonnegative integral vectors. Let be the set of all -matrices with row sum vector and column vector...
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LeRoy B. Beasley (2019)
Czechoslovak Mathematical Journal
Let and be positive integers, and let and be nonnegative integral vectors. Let be the set of all -matrices with row sum vector and column vector...
Halter-Koch, Franz (2000)
Mathematica Pannonica
Matsuura, Masaya (2003)
ELA. The Electronic Journal of Linear Algebra [electronic only]
Jin, Wen-Long (2005)
ELA. The Electronic Journal of Linear Algebra [electronic only]
Abramsky, Samson, Coecke, Bob (2005)
Theory and Applications of Categories [electronic only]
Huang, Wenling, Wan, Zhexian (2004)
Beiträge zur Algebra und Geometrie
Bračič, Janko (2009)
ELA. The Electronic Journal of Linear Algebra [electronic only]
Vítězslav Veselý (1990)
Archivum Mathematicum
Jaroslav Kautský (1993)
Applications of Mathematics
Discrete wavelets are viewed as linear algebraic transforms given by banded orthogonal matrices which can be built up from small matrix blocks satisfying certain conditions. A generalization of the finite support Daubechies wavelets is discussed and some special cases promising more rapid signal reduction are derived.
Erich Barvínek (1984)
Archivum Mathematicum
Marko Huhtanen, Olavi Nevanlinna (2007)
Studia Mathematica
A framework to extend the singular value decomposition of a matrix to a real linear operator is suggested. To this end real linear operators called operets are introduced, to have an appropriate generalization of rank-one matrices. Then, adopting the interpretation of the singular value decomposition of a matrix as providing its nearest small rank approximations, ℳ is approximated with a sum of operets.
Günter Heimbeck (1984)
Elemente der Mathematik
Mlýnek, Jaroslav, Martinec, Tomáš, Petrů, Michal (2017)
Programs and Algorithms of Numerical Mathematics
This article is focused on calculating the trajectory of an industrial robot in the production of composites for the automotive industry. The production technology is based on the winding of carbon fibres on a polyurethane frame. The frame is fastened to the end-effector of the robot arm (i.e. robot-end-effector, REE). The passage of the frame through the fibre processing head is determined by the REE trajectory. The position of the fibre processing head is fixed and is composed of three fibre guide...
Stanisław Janeczko, Zbigniew Jelonek (2009)
Fundamenta Mathematicae
Let and be compact symplectic manifolds (resp. symplectic manifolds) of dimension 2n > 2. Fix 0 < s < n (resp. 0 < k ≤ n) and assume that a diffeomorphism Φ : X → Y maps all 2s-dimensional symplectic submanifolds of X to symplectic submanifolds of Y (resp. all isotropic k-dimensional tori of X to isotropic tori of Y). We prove that in both cases Φ is a conformal symplectomorphism, i.e., there is a constant c ≠0 such that .
Lubomír Bakule, José Rodellar, Josep M. Rossell (2003)
Kybernetika
A generalized structure of complementary matrices involved in the input-state- output Inclusion Principle for linear time-invariant systems (LTI) including contractibility conditions for static state feedback controllers is well known. In this paper, it is shown how to further extend this structure in a systematic way when considering contractibility of dynamic controllers. Necessary and sufficient conditions for contractibility are proved in terms of both unstructured and block structured complementary...
Barker, George P., Thompson, Alex (1987)
Portugaliae mathematica
Barry, Paul (2009)
Journal of Integer Sequences [electronic only]
Cao, Chongguang, Tang, Xiaomin (2004)
ELA. The Electronic Journal of Linear Algebra [electronic only]
G. Loizou (1988)
Applicationes Mathematicae
Klein (1870)
Mathematische Annalen
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