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arxiv: 0904.3130 · v1 · submitted 2009-04-20 · 🧮 math.FA · math.AG

Algebraic pairs of isometries

classification 🧮 math.FA math.AG
keywords isometriespairspolynomialannihilatedcommutingalgebraicconditionconsider
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We consider pairs of commuting isometries that are annihilated by a polynomial. We show that the polynomial must be inner toral, which is a geometric condition on its zero set. We show that cyclic pairs of commuting isometries are nearly unitarily equivalent if they are annihilated by the same minimal polynomial.

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