型的等价与Catlin边界系统
Equivalence of types and Catlin boundary systems
摘要:
证明了在复n空间中光滑伪凸域上D 'Angelo有限型与Kohn有限理想型是等价的.这就是所谓的Kohn猜想。该论点使用卡特林的概念的边界系统以及方法从次解析和半代数几何。当边界子集只包含两个Catlin多型水平集时,根据D 'Angelo型、周围空间维数和形式水平,得到了\bar \partial -Neumann问题的次椭圆增益的一个下界.
英文摘要:
The D'Angelo finite type is shown to be equivalent to the Kohn finite ideal type on smooth, pseudoconvex domains in complex n space. This is known as the Kohn Conjecture. The argument uses Catlin's notion of a boundary system as well as methods from subanalytic and semialgebraic geometry. When a subset of the boundary contains only two level sets of the Catlin multitype, a lower bound for the subelliptic gain in the \bar\partial-Neumann problem is obtained in terms of the D'Angelo type, the dimension of the ambient space, and the level of forms.
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