Necessary and sufficient condition for a 2×2 block matrix to be a contraction.

Speaker : Samir Ch. Mandal

Date : 23rd September, 2014 (Tuesday)

Time : 09:15 pm – 10:15 pm

Venue : Lecture Hall I, Department of Mathematics

Abstract: In this talk we will prove a necessary and sufficient condition for each of the block matrices of the form (A B), (A ; C) and (A B ; C D) to be contraction. Here A,B,C,D are operators from Hilbert spaces into another Hilbert spaces.

Area: Linear Algebra

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