关于CR奇点的CR像
On CR singular CR images
AI总结:
本文研究CR奇异子流形,定义可去除CR奇点并等价于CR像,探讨扰动稳定性、二次不变量及可去除条件,并证明一个独立价值的引理。
摘要:
我们称一个CR奇异子流形$M$具有可去除的CR奇点,如果$M$的CR点处的CR结构作为$M$上的抽象CR结构穿过该奇点延伸。我们研究这样的实解析子流形,在这种情况下,可去除性等价于$M$是某个一般实解析子流形$N$在双全纯映射下的像,该映射将$N$微分同胚地映到$M$上,我们称之为CR像。我们研究CR奇点在扰动下的稳定性、相关的二次不变量以及CR奇点可去除性的条件。我们还证明了一个关于在CR子流形上扰动消除全纯函数零点的引理,该引理可能具有独立的研究价值。
英文摘要:
We say that a CR singular submanifold $M$ has a removable CR singularity if the CR structure at the CR points of $M$ extends through the singularity as an abstract CR structure on $M$. We study such real-analytic submanifolds, in which case removability is equivalent to $M$ being the image of a generic real-analytic submanifold $N$ under a holomorphic map that is a diffeomorphism of $N$ onto $M$, what we call a CR image. We study the stability of the CR singularity under perturbation, the associated quadratic invariants, and conditions for removability of a CR singularity. A lemma is also proved about perturbing away the zeros of holomorphic functions on CR submanifolds, which could be of independent interest.
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