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Chebyshev series for designing RF pulses employing an optimal control approach
(2004)
Magnetic resonance imaging (MRI) provides bidimensional images with high definition and selectivity. Selective excitations are achieved applying a gradient and a radio frequency (RF) pulse simultaneously. They are modeled ...
Incremental unknowns and graph techniques with in-depth refinement
(ISCI-INSTITUTE SCIENTIFIC COMPUTING & INFORMATION, 2007)
Asymptotic formulae of generalized chebyshev functions
(Universidad Nacuional de Colombia; Sociedad Colombiana de matemáticas, 1996)
In this paper we study the behavior of certain generalized Chebyshev functions over the square r-free integers and will prove Selberg's inequality for such functions
Limit cycles for some families of smooth and non-smooth planar systems
(Elsevier B.V., 2021-06-01)
We apply the averaging method in a class of planar systems given by a linear center perturbed by a sum of continuous homogeneous vector fields, to study lower bounds for their number of limit cycles. Our results can be ...
Leyes de los grandes números.
(2013-10-28)
La idea de probabilidad está íntimamente relacionada a la frecuencia relativa. Algunos resultados sobre esta
relación son los llamados "Leyes de los Grandes Números", que establecen el tipo de convergencia, "débil" o ...