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The work and influence of Professor S Lefschetz in algebraic
On the complex structures of a class of simplyconnected manifolds
On Kahler manifolds with vanishing canonical class by Etjgenio
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Abelian varieties acyclic algebraic geometry algebraic varieties analytic analytique arbitrary assume base points Betti numbers birational transformation boundary bundle carrier cell complex chain cochains cocycle coefficients cohomology classes commutative compact components condition consider contains corresponding curves CW-complex cycles defined definition denote differential form dimension divisor element equation equivalent espace exists finite number fixed point follows Formel function given group variety harmonic field harmonic form Hence homology groups homomorphism homotopy hyperplane sections induced integrals intersection invariant irreducible isomorphism J. H. C. Whitehead Kahler manifold kernel Lefschetz Lemma linear system locally connected Math metric module multiple neighborhood non-singular normal obtain operator oriented pair projective prove rational relations represented result ruled surface satisfies second kind sequence simplex simplicial singular space Steenrod subcomplex subgroup subset subvariety suppose surface tensor theorem Théorème theory topology tout trivial vector virtual zero