Lévy Laplacian of generalized functions on a nuclear space
Lévy Laplacian of generalized functions on a nuclear space
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核空间广义函数的列维拉普拉斯算子
DOI:
10.1016/0022-1236(90)90028-j
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发表时间:
1990
影响因子:
1.7
通讯作者:
Kimiaki Saitô
中科院分区:
文献类型:
--
作者:
Hui;Nobuaki Obata;Kimiaki Saitô
The Lévy LaplacianΔF(ξ) = limN→∞N−1∑n= 1N<F″(ξ),en⊗en> is shown to be equal to (i) ∝TF″s″(ξ;t)dt, whereFs″is the singular part ofF″, and (ii) 2limϱ→0ϱ−2(MF(ξ,ϱ)−F(ξ)), whereMFis the spherical mean ofF. It is proved that regular polynomials are Δ-harmonic and possess the mean value property. A relation between the Lévy Laplacian Δ and the Gross LaplacianΔGF(ξ) = ∑n= 1∞=<F″(ξ),en⊗en> is obtained. An application to white noise calculus is discussed.