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Search of Hadamard Matrices by Turyn SequencesBúsqueda de Matrices de Hadamard a través de Secuencias de Turyn
(Universidad de Costa Rica, Centro de Investigación en Matemática Pura y Aplicada (CIMPA), 2011)
search of hadamard matrices by turyn sequencesBúsqueda de Matrices de Hadamard a través de Secuencias de Turyn
(2011-07-08)
In this paper we study the Hadamard matrices and some algorithms to generate them. We review some theoretical aspects about Hadamard's conjecture, which asserts that every positive integer multiple of 4 is a Hadamard number. ...
search of hadamard matrices by turyn sequencesBúsqueda de Matrices de Hadamard a través de Secuencias de Turyn
(2011-07-08)
In this paper we study the Hadamard matrices and some algorithms to generate them. We review some theoretical aspects about Hadamard's conjecture, which asserts that every positive integer multiple of 4 is a Hadamard number. ...
Búsqueda de matrices de Hadamard a través de secuencias de Turyn
(Centro de Investigaciones en Matemática Pura y Aplicada (CIMPA) y Escuela de Matemática, San José, Costa Rica., 2011)
Index of Hadamard multiplication by positive matrices II
(Elsevier Science Inc, 2001-08)
For each n × n positive semidefinite matrix A we define the minimal index I (A)=max{λ ⪰ 0 : A ο B ⪰ λB for all B ⪰ 0} and, for each norm N, the N-index I_N(A) = min{N(A ο B): B ⪰0 and N(B) = 1}, where A ο B = [aij bij] is ...
Hadamard functions of inverse M-matricese
(2009)
We prove that the class of generalized ultrametric matrices (GUM) is the largest
class of bipotential matrices stable under Hadamard increasing functions. We also show that any
power α ≥ 1, in the sense of Hadamard ...
Secuencias Tipo Turyn
(Centro de Investigaciones en Matemática Pura y Aplicada (CIMPA) y Escuela de Matemática, San José, Costa Rica., 2019)
Turyn type sequencesSecuencias tipo Turyn
(Universidad de Costa Rica, Centro de Investigación en Matemática Pura y Aplicada (CIMPA), 2019)
Nested Construction of Families of Complex Hadamard Matrices
(2014)
We present a new parametrization of families of complex Hadamard matrices stemming from the Fourier matrices in every prime power dimension. We connect continuous Abelian groups with families of complex Hadamard matrices ...