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arXiv 1209.3477math.RTmath.CAmath.PR
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有限域上半无限格拉斯曼空间$L^2$

The space $L^2$ on semi-infinite Grassmannian over finite field

Yury A. Neretin

摘要:

构造了有限域上半无限格拉斯曼空间上的$GL$不变测度,描述了该测度的自然对称群,并将格拉斯曼空间$L^2$分解为不可约表示.该谱是离散的,用AlSalam-Carlitz正交多项式给出了Grassmannian上的球函数.我们还在相应的标志空间上构造了一个不变测度。

英文摘要:

We construct a $GL$-invariant measure on a semi-infinite Grassmannian over a finite field, describe the natural group of symmetries of this measure, and decompose the space $L^2$ over the Grassmannian on irreducible representations. The spectrum is discrete, spherical functions on the Grassmannian are given in terms of the Al Salam--Carlitz orthogonal polynomials. We also construct an invariant measure on the corresponding space of flags.

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。

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