@inbook{00108554566948539249987444d58a8d,
title = "A Distance Formula Related to a Family of Projections Orthogonal to Their Symmetries",
abstract = "Let u be a Hermitian involution, and e an orthogonal projection, acting on the same Hilbert space H. We establish the exact formula, in terms of ║eue║, for the distance from e to the set of all orthogonal projections q from the algebra generated by e, u, and such that quq = 0.",
keywords = "C-algebra, Involution, Orthogonal projection, W-algebra",
author = "Spitkovsky, {Ilya M.}",
note = "Publisher Copyright: {\textcopyright} 2018, Springer International Publishing AG, part of Springer Nature.",
year = "2018",
doi = "10.1007/978-3-319-72449-2_17",
language = "English (US)",
series = "Operator Theory: Advances and Applications",
publisher = "Springer International Publishing",
pages = "371--376",
booktitle = "Operator Theory",
}