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Arnold's projective plane and \(r\)-matrices - MaRDI portal

Arnold's projective plane and \(r\)-matrices (Q606169)

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scientific article; zbMATH DE number 5816380
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Arnold's projective plane and \(r\)-matrices
scientific article; zbMATH DE number 5816380

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    Arnold's projective plane and \(r\)-matrices (English)
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    16 November 2010
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    Summary: We will explain Arnold's 2-dimensional (shortly, 2D) projective geometry [\textit{V. Arnold}, J. Geom. Phys. 53, No.~4, 421--427 (2005; Zbl 1092.53055)] by means of lattice theory. It will be shown that the projection of the set of nontrivial triangular \(r\)-matrices is the pencil of tangent lines of a quadratic curve on Arnold's projective plane.
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    lattice theory
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    pencil of tangent lines
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    quadratic curve
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