arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1306.6392math.RT
收藏

极小抛物子群的Plancherel公式

The Plancherel Formula for Minimal Parabolic Subgroups

Joseph A. Wolf

摘要:

在最近的一篇论文中,我们发现了一个幂零李群被分成子群的条件,这些子群具有平方可积〔的〕的酉表示,这些表示合在一起形成正规子群的过滤。这导致了显式特征公式,Plancherel公式和多重公式。我们还证明了极小抛物子群$P = MAN$的诣零根$N$具有“逐步平方可积〔的〕“性质。这里我们将这些结果从$N$推广到$P$。给出了$N$的正交关系和Plancherel密度的Pfidian多项式,也给出了一个半不变的微分算子,弥补了$P$的单模性不足.其结果是$P$的完全显式Plancherel公式。

英文摘要:

In a recent paper we found conditions for a nilpotent Lie group to be foliated into subgroups that have square integrable unitary representations that fit together to form a filtration by normal subgroups. That resulted in explicit character formulae, Plancherel formulae and multiplicity formulae. We also showed that nilradicals $N$ of minimal parabolic subgroups $P = MAN$ enjoy that "stepwise square integrable" property. Here we extend those results from $N$ to $P$. The Pfaffian polynomials, which give orthogonality relations and Plancherel density for $N$, also give a semiinvariant differential operator that compensates lack of unimodularity for $P$. The result is a completely explicit Plancherel formula for $P$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑