The present article is concerned with global subelliptic estimates for Kramers-Fokker-Planck operators with polynomials of degree less than or equal to two. The constants appearing in those estimates are accurately formulated in terms of the coefficients, especially when those are large.

中文翻译：

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部分 Kramers-Fokker-Planck 算子的四元数结构及分析

本文涉及阶数小于或等于 2 的多项式的 Kramers-Fokker-Planck 算子的全局亚椭圆估计。出现在这些估计中的常数是根据系数准确制定的，尤其是当系数很大时。