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On quantum perfect state transfer in weighted join graphs
(2009-09-02)
We study perfect state transfer on quantum networks represented by weighted graphs. Our focus is on graphs constructed from the join and related graph operators
Luminescent polystyrene films, a novel way to reduce styrofoam residues
(2015)
Polystyrene (PS) films doped with blue, yellow and red organic pigments have been deposited on glass and on commercial LED chips by spray pyrolysis using recycled PS as precursor, at deposition rates between 100 and 200 ...
Eigenvalues, K-theory and Minimal Flows
(2007)
Let (Y, T) be a minimal suspension flow built over a dynamical system (X, S) and with (strictly positive, continuous) ceiling function f : X ! R. We show that the eigenvalues of (Y, T) are contained in the range of a trace ...
CONTINUOUS AND DISCRETE FLOWS ON OPERATOR ALGEBRAS
(2009)
Let (N, R, ) be a centrally ergodic W* dynamical system. When N is not a factor, we show that, for each t 6= 0, the crossed product induced by the time t automorphism t is not a factor if and only if there exist a rational ...
THE C*-ALGEBRAS ASSOCIATED TO TIME-t AUTOMORPHISMS OF MAPPING TORI
(2006)
We find the range of a trace on the K0 group of a crossed product by a time-t automorphism of a mapping torus. We also find a formula to compute the Voiculescu-Brown entropy for such an automorphism. By specializing to the ...
Un enfoque histórico y epistemológico de la noción de linealidad
(2010)
Se presenta un estudio histórico y epistemológico acerca de la noción de linealidad, donde se muestran aspectos relevantes sobre su génesis y desarrollo, haciendo un rescate de la misma, hasta mostrar su aparición en ...
TEACHERS' CONSTRUCTION OF DYNAMIC MATHEMATICAL MODELS BASED ON THE USE OF COMPUTATIONAL TOOLS
(2009)
To what extent does the use of computational tools offer teachers the possibility of constructing dynamic models to identify and explore diverse mathematical relations? What ways of reasoning or thinking about the problems ...
LA RESIGNIFICACIÓN DE LA NOCIÓN DE LINEALIDAD
(2010)
Se considera que la noción de linealidad toma distintos significados, por los dominios matemáticos por los que transita en el currÃculo escolar. Está vinculada desde una perspectiva epistemológica a la noción de ...