A family of tridiagonal pairs
A family of tridiagonal pairs
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三对角对族
DOI:
10.1016/j.laa.2004.05.003
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发表时间:
2004
影响因子:
1.1
通讯作者:
B. Curtin
中科院分区:
文献类型:
--
作者:
Hasan Alnajjar;B. Curtin
Let F denote a field, and let V denote a vector space of finite positive dimension over F. Let A, A∗denote a tridiagonal pair on V of diameter d⩾3. Assume the eigenvalue and dual eigenvalue sequences of A, A∗satisfy θi=q2iθ, θi*=q2d-2iθ*for some nonzero scalars θ, θ∗, q∈F, where q is not a root of unity. Assume that not all eigenvalues of A and A∗have multiplicity one. Let M and M∗denote the subalgebras of End(V) generated by A and A∗, respectively, and assume that V=Mv∗+M∗v for some eigenvectors v∗of A∗associated with θ0*and v of A associated with θd. We find a nice basis for V and describe the action of A, A∗on this basis in terms of six parameters.