The Projective Geometry of Freudenthal's
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J.M Landsberg; L Manivel
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Article
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2001
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Elsevier Science
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English
β 248 KB
We connect the algebraic geometry and representation theory associated to Freudenthal's magic square. We give unified geometric descriptions of several classes of orbit closures, describing their hyperplane sections and desingularizations, and interpreting them in terms of composition algebras. In p