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arXiv 0904.0968math.RTmath.FA
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扩展Dynkin图的谱问题与代数

The Spectral Problem and Algebras Associated with Extended Dynkin Graphs

Stanislav Popovych

摘要:

谱问题是描述厄米特算子s. t的不可约$n$ -元组的可能谱$σ(A_j)$。$A_1+...+A_n$是标量运算符。当$m_j= | σ(A_j)|$是有限的,且有根树${\rm T}_{m_1,..., m_n}$的$n$分支的长度为$m_1, ..., m_n$时,S. A. Kruglyak,S. V. Popovych和Yu。S. Samo \v ılenko。本文给出了当$(m_1, ..., m_n) \in \{(2,2,2,2), (3,3,3), (4,4,2)$,$(6,3,2)\}$是星形单缀扩充Dynkin图时,图的谱问题的解.

英文摘要:

The Spectral Problem is to describe possible spectra $σ(A_j)$ for an irreducible $n$-tuple of Hermitian operators s.t. $A_1+...+A_n$ is a scalar operator. In case when $m_j= | σ(A_j)|$ are finite and a rooted tree ${\rm T}_{m_1,..., m_n}$ with $n$ branches of lengths $m_1, ..., m_n$ is a Dynkin graph the explicit answer to the Spectral Problem was given recently by S. A. Kruglyak, S. V. Popovych, and Yu. S. Samo\vılenko. In present work the solution of the Spectral Problem for all star-shaped simply laced extended Dynkin graphs, i.e. when $(m_1, ..., m_n) \in \{(2,2,2,2), (3,3,3), (4,4,2)$, $(6,3,2)\}$ is presented.

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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