Involutory Hopf group-coalgebras and flat bundles over 3-manifolds
نویسندگان
چکیده
منابع مشابه
Involutory Hopf Group-coalgebras and Flat Bundles over 3-manifolds
Given a group π, we use involutary Hopf π-coalgebras to define a scalar invariant of flat π-bundles over 3-manifolds. When π = 1, this invariant equals to the one of 3-manifolds constructed by Kuperberg from involutary Hopf algebras. We give examples which show that this invariant is not trivial.
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ژورنال
عنوان ژورنال: Fundamenta Mathematicae
سال: 2005
ISSN: 0016-2736,1730-6329
DOI: 10.4064/fm188-0-11