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Listar por autor "Rivera Ríos, Israel P."
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Dominación sparse para conmutadores y estimaciones cuantitativas
Rivera Ríos, Israel P. (2018-02-07)Dada una funci ́on localmente integrable y un operador lineal T definimos el commutator [b, T ] como [b, T ]f (x) = b(x)T f (x) − T (bf )(x). En esta charla presentaremos resultados de dominación sparse para conmutadores ... -
Mixed weak-type inequalities in Euclidean spaces and in spaces of the homogeneous type
Ibañez-Firnkorn, Gonzalo; Rivera Ríos, Israel P. (Wiley, 2023-11-05)In this paper, we provide mixed weak-type inequalities generalizing previous results in an earlier work by Caldarelli and the second author and also in the spirit of earlier results by Lorente et al. One of the main novelties ... -
One-sided Cp estimates via M# function.
Lorente-Domínguez, María; Martin-Reyes, Francisco Javier; Rivera Ríos, Israel P. (Cambridge, 2022-07-04)We recall that w ∈ C+p if there exist " > 0 and C > 0 such that for any a < b < c with c − b < b − a and any measurable set E ⊂ (a, b), the following holds. This condition was introduced by Riveros and de la Torre as a ... -
Quantitative John–Nirenberg inequalities at different scales
Martínez-Perales, Javier Cecilio; Rela, Ezequiel; Rivera Ríos, Israel P. (Springer, 2022-06-07)Given a family Z = { · Z Q } of norms or quasi-norms with uniformly bounded triangle inequality constants, where each Q is a cube in Rn, we provide an abstract estimate of the form f − fQ,μZ Q ≤ c(μ)ψ(Z) f BMO(dμ) for ... -
Some quantitative one-sided weighted estimates
Lorente-Domínguez, María; Martin-Reyes, Francisco Javier; Rivera Ríos, Israel P. (Elsevier, 2022-12-20)We show a link between affine differential geometry and null submanifolds in a semi-Riemannian manifold via statistical structures. Once a rigging for a null submanifold is fixed, we can construct a semi-Riemannian metric ...