منابع مشابه
Varieties with One Apparent Double Point
The number of apparent double points of a smooth, irreducible projective variety X of dimension n in P is the number of secant lines to X passing through the general point of P. This classical notion dates back to Severi. In the present paper we classify smooth varieties of dimension at most three having one apparent double point. The techniques developed for this purpose allow to treat a wider...
متن کاملModularity of Some Non–rigid Double Octic Calabi–yau Threefolds
The modularity conjecture for Calabi–Yau manifolds predicts that every Calabi–Yau manifold should be modular in the sense that its L– series coincides with the L–series of some automorphic form(s). The case of rigid Calabi–Yau threefolds was (almost) solved by Dieulefait and Manoharmayum in [7, 6]. On the other hand in the non–rigid case it is even not clear which automorphic forms should appea...
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In recent theoretical and experimental work on schemata in genetic programming we have proposed a new simpler form of crossover in which the same crossover point is selected in both parent programs. We call this operator one-point crossover because of its similarity with the corresponding operator in genetic algorithms. One point crossover presents very interesting properties from the theory po...
متن کاملThreefolds with Vanishing Hodge Cohomology
We consider algebraic manifolds Y of dimension 3 over C with H(Y,ΩjY ) = 0 for all j ≥ 0 and i > 0. Let X be a smooth completion of Y with D = X − Y , an effective divisor on X with normal crossings. If the D-dimension of X is not zero, then Y is a fibre space over a smooth affine curve C (i.e., we have a surjective morphism from Y to C such that the general fibre is smooth and irreducible) suc...
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ژورنال
عنوان ژورنال: Rendiconti del Circolo Matematico di Palermo (1952 -)
سال: 2016
ISSN: 0009-725X,1973-4409
DOI: 10.1007/s12215-016-0231-4