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On semidirectly closed pseudovarieties of aperiodic semigroups

Journal of Pure and Applied Algebra | 2001

M.L. Teixeira

DOI

The Semidirectly Closed Pseudovariety Generated by Aperiodic Brandt Semigroups

International Journal of Algebra and Computation | 2001

M.L. Teixeira

DOI

Optimization of dynamic neural fields [1]

Neurocomputing | 2001

C. Igel

W. Erlhagen

D. Jancke

DOI

Linear operators preserving the numerical range (radius) on triangular matrices

Linear and Multilinear Algebra | 2001

C.-K. Li

P. Šemrl

G. Soares

Graph Products of Monoids

Semigroup Forum | 2001

A. Veloso Da Costa

DOI

On graph products of automatic monoids

RAIRO - Theoretical Informatics and Applications | 2001

A. Veloso Da Costa

DOI

Free profinite locally idempotent and locally commutative semigroups

Journal of Pure and Applied Algebra | 2001

J.C. Costa

DOI

How modern mathematics came to Portugal

Mathematical Intelligencer | 2001

E.M.A.S. Amaral

Non-radial null geodesics in spherical dust collapse

Classical and Quantum Gravity | 2001

F.C. Mena

B.C. Nolan

DOI

Ranks of submatrices and the off-diagonal indices of a square matrix

Linear Algebra and Its Applications | 2000

E. Marques De Sá

Y.-L. Zhang

The number of Kronecker indices of square pencils of a special kind

Linear Algebra and Its Applications | 2000

E. Marques De Sá

Y.-L. Zhang

On finitely based pseudovarieties of the forms V * D and V * D<inf>n</inf>¹

Journal of Pure and Applied Algebra | 2000

J. Almeida

A. Azevedo

L. Teixeira