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pro vyhledávání: '"Raphaël Achet"'
Autor:
Raphaël Achet
Publikováno v:
Journal of Pure and Applied Algebra. 221:2838-2860
We obtain an explicit upper bound on the torsion of the Picard group of the forms of the affine line and of the additive group, and a sufficient condition for this Picard group to be non trivial. We also give examples of non trivial forms of the affi