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In mathematics, Picard–Lefschetz theory studies the topology of a complex manifold by looking at the critical points of a holomorphic function on the manifold. It was introduced by Émile Picard for co ...
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In algebraic geometry, a branch of mathematics, the Lefschetz theorem on (1,1)-classes, named after Solomon Lefschetz, is a classical statement relating divisors on a compact Kähler manifold to classe ...
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In mathematics, a Lefschetz manifold is a particular kind of symplectic manifold, sharing a certain cohomological property with Kaehler manifolds, that of satisfying the conclusion of the Hard Lefsche ...
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In mathematics, a Lefschetz pencil is a construction in algebraic geometry considered by Solomon Lefschetz, used to analyse the algebraic topology of an algebraic variety V. A pencil is a particular k ...
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Paul Althaus Smith (1900 – June 13, 1980) was an American mathematician. His name occurs in two significant conjectures in geometric topology: the Smith conjecture, which is now a theorem, and the Hil ...
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Solomón Léfschetz, nato Solomon Lefšec (rus. Соломо́н Ле́фшец; Mosca, 3 settembre 1884 – Princeton, 5 ottobre 1972), è stato un matematico statunitense di origine russa, che ha dato fondamentali contr ...
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