2010
DOI: 10.48550/arxiv.1006.5124
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Multiplications of Maximal Rank in the Cohomology of P^1\times P ^1

Salvatore Giuffrida,
Renato Maggioni,
Riccardo Re

Abstract: Let Q = P 1 × P 1 and let C ⊆ Q be a curve of type (a, b) of equation F = 0. The main purpose of this paper is to analize the multiplicative structure of the bi-graded module H 1 * O Q , in particular to prove that for any r, s ≥ 0 the multiplication map (a, b). Interpretations of this problem in the contexts of multilinear algebra and differential algebra are emphasized.

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