%0 Journal Article
%T Formal groups arising from formal punctured ribbons
%A Herbert Kurke
%A Denis Osipov
%A Alexander Zheglov
%J Mathematics
%D 2009
%I arXiv
%R 10.1142/S0129167X10006203
%X We investigate Picard functor of a formal punctured ribbon. We prove that under some conditions this functor is representable by a formal group scheme. Formal punctured ribbons were introduced in arXiv:0708.0985.
%U http://arxiv.org/abs/0901.1607v4