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On the set of operators having a given simply connected spectral set
(Universidad Nacuional de Colombia; Sociedad Colombiana de matemáticas, 1981)
Se estudian algunas propiedades de la familia de operadores que poseen un conjunto dado, compacto y simplemente conexo, como uno de sus conjuntos espectrales. Estos operadores forman un conjunto conexo por arcos el cual ...
ON GENERIC ROTATIONLESS DIFFEOMORPHISMS OF THE ANNULUS
(AMER MATHEMATICAL SOC, 2010)
Let f be a C(r)-diffeomorphism of the closed annulus A that preserves the orientation, the boundary components and the Lebesgue measure. Suppose that f has a lift (f) over tilde to the infinite strip (A) over tilde which ...
Homeomorphisms of the annulus with a transitive lift
(SPRINGER, 2011)
Let f be a homeomorphism of the closed annulus A that preserves the orientation, the boundary components and that has a lift (f) over tilde to the infinite strip (A) over tilde which is transitive. We show that, if the ...
On the minimum of a polynomial function on a basic closed semialgebraic set and applications
(Siam Publications, 2013-04)
We give an explicit upper bound for the algebraic degree and an explicit lower bound for the absolute value of the minimum of a polynomial function on a compact connected component of a basic closed semialgebraic set when ...
HOMEOMORPHISMS OF THE ANNULUS WITH A TRANSITIVE LIFT II
(AMER INST MATHEMATICAL SCIENCES, 2011)
Let f be a homeomorphism of the closed annulus A that preserves the orientation, the boundary components and that has a lift (f) over tilde to the in finite strip (A) over tilde which is transitive. We show that, if the ...
On the connectedness of the set of Riemann surfaces with real moduli
(2018)
The moduli space , of genus closed Riemann surfaces, is a complex orbifold of dimension which carries a natural real structure, i.e. it admits an anti-holomorphic involution . The involution maps each point corresponding ...
FLOWS WITHOUT WANDERING POINTS ON COMPACT CONNECTED SURFACES
(AMER MATHEMATICAL SOC, 2010)
Given a compact 2 dimensional manifold M we classify all continuous flows phi without wandering points on M. This classification is performed by finding finitely many pairwise disjoint open phi-invariant subsets {U(1), ...
Discrete Conley Index Theory For Zero Dimensional Basic Sets
(Amer Inst Mathematical Sciences-AIMSSpringfield, 2017)
Improving semi-supervised learning through optimum connectivity
(Elsevier B.V., 2016-12-01)
The annotation of large data sets by a classifier is a problem whose challenge increases as the number of labeled samples used to train the classifier reduces in comparison to the number of unlabeled samples. In this ...
A Probabilistic Symbolic Algorithm to Find the Minimum of a Polynomial Function on a Basic Closed Semialgebraic Set
(Springer, 2014-09)
We consider the problem of computing the minimum of a polynomial function g on a basic closed semialgebraic set (Formula presented.). We present a probabilistic symbolic algorithm to find a finite set of sample points of ...