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1999-09-23
Classification of Plane Congruences in P4(C) (II)
Manuel Pedreira-PerezLuis-Eduardo Sola-Conde
文献摘要
We study second order focal loci of nondegenerate plane congruences in P4© with degenerate focal conic. We show the projective generation of such congruences when the second order focal locus fills a component of the focal conic, improving a result of Corrado Segre
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