James Rovnyak
Abstract
Infinite orthogonal families of regular subspaces of a Kreĭn space exhibit a wide range of behavior. An elementary method is used to show that conditions on sums of projections produce behavior similar to that of orthogonal closed subspaces of a Hilbert space.
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Infinite orthogonal families of regular subspaces of a Kreĭn space exhibit a wide range of behavior. An elementary method is used to show that conditions on sums of projections produce behavior similar to that of orthogonal closed subspaces of a Hilbert space.
Key concepts: Linear subspace, Hilbert space, Mathematics, Space (punctuation), Pure mathematics, Range (aeronautics), Mathematical analysis, Algebra over a field