4 - Almost Invariance
Published online by Cambridge University Press: 18 September 2026
Summary
The related concept of almost invariance, leading to the celebrated almost-invariant subspace theorem, is presented, and it is linked to near invariance with defect. Several related concepts (some being generalizations) are introduced and the chapter concludes with the theory of pseudomultipliers.
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- Nearly Invariant Subspaces and their Applications , pp. 49 - 66Publisher: Cambridge University PressPrint publication year: 2026
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