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Pointwise convergence to the initial data for nonlocal dyadic diffusions
(Springer Heidelberg, 2016-03)
In this paper we solve the initial value problem for the diffusion induced by dyadic fractional derivative s in R +. First we obtain the spectral analysis of the dyadic fractional derivative operator in terms of the Haar ...
On λ-closure spaces
(Pontificia Universidad Católica del PerúPE, 2017)
Nonnegative trigonometric polynomials
(2002-12-01)
An extremal problem for the coefficients of sine polynomials, which are nonnegative in [0,π] , posed and discussed by Rogosinski and Szego is under consideration. An analog of the Fejér-Riesz representation of nonnegative ...
Nonnegative trigonometric polynomials
(2002-12-01)
An extremal problem for the coefficients of sine polynomials, which are nonnegative in [0,π] , posed and discussed by Rogosinski and Szego is under consideration. An analog of the Fejér-Riesz representation of nonnegative ...
Valadier-like formulas for the supremum function I
(Heldermann Verlag, 2018)
We generalize and improve the original characterization given by Valadier [18, Theorem 1] of the subdifferential of the pointwise supremum of convex functions, involving the subdifferentials of the data functions at nearby ...
On A Fixed Point Theorem For The Product Of Operators
(Birkhauser Verlag AG, 2016)
On A Fixed Point Theorem
(Universitatii Al.I.Cuza din Iasi, 2016)
Pointwise estimates for gradients of temperatures in terms of maximal functions
(Unión Matemática Argentina, 2009-12)
We give a detailed proof, in the case of one space dimension, of a pointwise upper estimate for the space gradient of a temperature. The operators involved are a one-sided maximal Hardy-Littlewood in time and the Calderón ...