Codice QDD 75 Titolo Some properties of BV functions on Carnot groups related to the heat semigroup Data 2010-11-20 Autore/i Bramanti, M.; Miranda, M., Pallara, D. Link Download full text Abstract In this paper we provide two different characterizations of sets with finite perimeter and functions of bounded variation in Carnot groups, analogous to those which hold in Euclidean spaces, in terms of the short-time behaviour of the heat semigroup. The second one holds under the hypothesis that the reduced boundary of a set of finite perimeter is rectifiable, a result that presently is known in Step 2 Carnot groups.