arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1104.1936math.FAmath.CAmath.SP
收藏

虚方向上的差分Sturm-Liouville问题

Difference Sturm--Liouville problems in the imaginary direction

Yury Neretin

摘要:

我们考虑$L^2$中的差分算子在$\R$上的形式为$$ L f(s)=p(s)f(s+i)+q(s) f(s)+r(s) f(s-i) ,$$,其中$i$是虚数单位。有定性域是指在无穷远处减的条件下,带上的全纯函数。这种类型的问题与离散光谱是众所周知的(迈克斯纳-Pollaszek,连续哈恩,连续对偶哈恩,和威尔逊超几何正交多项式)。我们写显式谱分解的几个运营商$L$连续谱。我们还讨论了类似的“边界条件”等运营商。

英文摘要:

We consider difference operators in $L^2$ on $\R$ of the form $$ L f(s)=p(s)f(s+i)+q(s) f(s)+r(s) f(s-i) ,$$ where $i$ is the imaginary unit. The domain of definiteness are functions holomorphic in a strip with some conditions of decreasing at infinity. Problems of such type with discrete spectra are well known (Meixner--Pollaszek, continuous Hahn, continuous dual Hahn, and Wilson hypergeometric orthogonal polynomials). We write explicit spectral decompositions for several operators $L$ with continuous spectra. We also discuss analogs of 'boundary conditions' for such operators.

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。

↑