Singular Integral Operators and Essential Commutativity on the Sphere
Singular Integral Operators and Essential Commutativity on the Sphere
复制标题
奇异积分算子和球面上的本质交换性
DOI:
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发表时间:
2010
期刊:
影响因子:
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通讯作者:
Jingbo Xia
中科院分区:
文献类型:
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作者:
Jingbo Xia
Abstract Let $mathcal{T}$ be the ${{C}^{*}}$ -algebra generated by the Toeplitz operators $left{ {{T}_{varphi }}:varphi in {{L}^{infty }}left( S,dsigma
ight)
ight}$ on the Hardy space ${{H}^{2}}left( S
ight)$ of the unit sphere in ${{C}^{n}}$ . It is well known that $mathcal{T}$ is contained in the essential commutant of $left{ {{T}_{varphi }}:varphi in ext{VMO}cap {{L}^{infty }}left( S,dsigma
ight)
ight}$ . We show that the essential commutant of $left{ {{T}_{varphi }}:varphi in ext{VMO}cap {{L}^{infty }}left( S,dsigma
ight)
ight}$ is strictly larger than $mathcal{T}$ .