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Convex matrix equations. (English) Zbl 0262.15011


MSC:

15A24 Matrix equations and identities
15A30 Algebraic systems of matrices
20M10 General structure theory for semigroups
52A40 Inequalities and extremum problems involving convexity in convex geometry
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[16] E. Witt, Theorie der quadratische Formen in beliebigen Korpern, J. Reine Angew. Math. 176 (1937), 31-44.
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