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Revista Colombiana de Matemáticas
Print version ISSN 0034-7426
Abstract
ENRIQUEZ, FRANCISCO and PEREZ, JHON. Description of the Nikolski\u\i-Besov Class Decreasing its Smoothness Parameter using Weak Fractional Derivatives. Rev.colomb.mat. [online]. 2013, vol.47, n.2, pp.149-165. ISSN 0034-7426.
The Nikolski\u\i-Besov spaces Bpqα\big(Rn\big)≡ Bpqα, 1≤ p,\,q≤∞, α>0, recently were described using the Caputo's fractional derivative. Using the concept of weak fractional derivative, in this paper we reduces the characterization of Bpqα to the case Bpqγ, where γ is any positive number strictly less than α.
Keywords : Nikolski\u\i-Besov spaces; Fractional derivative; Poisson kernel; Poisson integral.