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20032011
most citedDouble Beta Decay, Majorana Neutrinos, and Neutrino Mass

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8 papers · 1 filter

math.CA2009

Decomposition of spaces of distributions induced by tensor product bases

Kamen Ivanov, Pencho Petrushev, Yuan Xu

Rapidly decaying kernels and frames (needlets) in the context of tensor product Jacobi polynomials are developed based on several constructions of multivariate cutoff fu…

math.CA20081 cited

Sub-exponentially localized kernels and frames induced by orthogonal expansions

Kamen Ivanov, Pencho Petrushev, Yuan Xu

The aim of this paper is to construct sup-exponentially localized kernels and frames in the context of classical orthogonal expansions, namely, expansions in Jacobi polynomials, sp…

math.CA2008

Decomposition of Triebel-Lizorkin and Besov spaces in the context of Laguerre expansions

G. Kerkyacharian, P. Petrushev, D. Picard +1

A pair of dual frames with almost exponentially localized elements (needlets) are constructed on $\RR_+^d$ based on Laguerre functions. It is shown that the Triebel-Lizorkin and Be…

math.CA2007

Decomposition of spaces of distributions induced by Hermite expansions

Pencho Petrushev, Yuan Xu

Decomposition systems with rapidly decaying elements (needlets) based on Hermite functions are introduced and explored. It is proved that the Triebel-Lizorkin and Besov spaces on $…

math.CA20071 cited

Decomposition of weighted Triebel-Lizorkin and Besov spaces on the ball

G. Kyriazis, P. Petrushev, Yuan Xu

Weighted Triebel-Lizorkin and Besov spaces on the unit ball in $\Rd$ with weights $\W(x)= (1-|x|^2)^{μ-1/2}$, , are introduced and explored. A decomposition scheme is…

math.CA2006

Localized polynomial frames on the ball

Pencho Petrushev, Yuan Xu

Almost exponentially localized polynomial kernels are constructed on the unit ball in $\RR^d$ with weights %functions , , by smoothing out…