A nilpotent Lie algebra and eigenvalue estimates
Volume 68 / 1995
Colloquium Mathematicum 68 (1995), 7-16
DOI: 10.4064/cm-68-1-7-16
Abstract
The aim of this paper is to demonstrate how a fairly simple nilpotent Lie algebra can be used as a tool to study differential operators on $ℝ^n$ with polynomial coefficients, especially when the property studied depends only on the degree of the polynomials involved and/or the number of variables.
