Lecture XIV

Carl Ludwig Siegel and Komaravolu Chandrasekharan
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Komaravolu Chandrasekharan: ETH Zürich, Mathematik

A chapter in Lectures on the Geometry of Numbers, 1989, pp 138-144 from Springer

Abstract: Abstract A boundary point of R is a point in S, such that arbitrarily near to it (in the sense of the Euclidean distance in the space S) there exist points belonging to R and points not belonging to R. [Notation as in § 1 of Lecture XIII.] A boundary point of R may not belong to P; for example, the zero matrix does not belong to P, yet it is a boundary point of R, because λT (λ arbitrary positive) belongs to R if T does, and we may let λ tend to zero.

Date: 1989
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DOI: 10.1007/978-3-662-08287-4_14

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