The φS polar decomposition when the cosquare of S is normal

Let S ∈ Mn(C) be nonsingular such that S−T S is normal (that is, the cosquare of S is normal). Set φS(A) = S−1AT S for A ∈ Mn(C). We determine conditions on A so that A has a φS polar decomposition. We also find the possible Jordan Canonical Forms of a φS orthogonal matrix and of a φS skew symmetric...

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Bibliographic Details
Main Authors: Granario, Daryl Q., Merino, Dennis I., Paras, Agnes T.
Format: text
Published: Animo Repository 2015
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Online Access:https://animorepository.dlsu.edu.ph/faculty_research/11362
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Institution: De La Salle University