Erratum

Displaying similar documents to “Erratum”

A new construction of characteristic classes for noncommutative algebraic principal bundles

G. I. Sharygin (2003)

Banach Center Publications

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We propose a new construction of characteristic classes for noncommutative algebraic principal bundles (Hopf-Galois extensions) with values in Hochschild and cyclic homology.

On graded bundles and their geometry

J. Czyż (1984)

Banach Center Publications

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Algebraische und topologische reelle Zykeln unter birationalen Transformationen.

Heinz-Werner Schülting (1985)

Mathematische Annalen

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On graded algebra bundles.

Popescu, Paul, Popescu, Marcela (1999)

Novi Sad Journal of Mathematics

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Morphisms on an Algebraic Curve and Divisor Classes in the Self Product

Lucio Guerra (2007)

Bollettino dell'Unione Matematica Italiana

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Morphisms on a curve may be seen as homology classes in the self product. We describe these classes as belonging to an intersection: the locus of integral points of an algebraic set in the complex homology group, and the locus of effective divisor classes. We write down explicit equations for the algebraic set, and in the case of genus three we compute a few explicit solutions over the rationals.