Invariant subspaces for tridiagonal oper
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Sophie Grivaux
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Article
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2002
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Elsevier Science
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French
โ 113 KB
We consider certain complex sequence spaces X indexed by N with the canonical basis (ฮด n ) n 1 . Let T โ L(X) be a tridiagonal operator on X. Assume that the associated matrix (t i,j ) i,j 1 has real entries and satisfies the weak symmetry condition that for every integer n 1, t n,n+1 t n+1,n 0. The