A decomposition of additive functionals of finite energy

A decomposition of additive functionals of finite energy
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有限能量的加性泛函的分解

DOI:
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发表时间:
1979
影响因子:
0.8
通讯作者:
M. Fukushima
M. Fukushima
中科院分区:
数学2区
文献类型:
--
作者:
M. Fukushima

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著名的n维布朗运动Xt和u ∈ C2(Rn)的伊藤公式如下:(0.1)在本文的§ 6中,我们将其推广到u是Sobolev空间H1R(n)中的任意元素的情况,因此Δu是一个调和分布,它甚至不是一般的符号测度。因此,(0.1)的右手边的第二项可能不是t的有界变差。
The celebrated Ito formula for the n-dimensional Brownian motion Xt and for u ∈ C2(Rn ) runs as follows: (0.1) In § 6 of this paper we extend this to the case where u is any element of the Sobolev space H1R(n ) and accordingly Δu is a tempered distribution which is not even a signed measure in general. As a consequence the second term of the right hand side of (0.1) may not be of bounded variation in t.