S.Orevkov
pointed out a gap in the proof of the fact that the Markovtrace
is well-defined, when the number of strands is at least 4, due to a
family of obstructions not covered by our computations.
Generalized Matching Rules, with P.Ossi, Journal of Alloys
and Compounds, 316 (2001),
39-45 (preliminary
version: On
periodic and aperiodic tilings,
Prépublications de
l'Institut
Fourier, 489 (1999) )
Presentations
of surface braid groups by graphs, avec V. Vershinin, Fundamenta Mathematicae,
181(2005),
1-20.
Positive
presentations of surface braid groups, with E. Godelle, Journal of Knot
Theory and its Ramifications, 16 n°9 (2007), 1219-1233
On
automorphisms of surface braid groups, Journal of Knot Theory and its
Ramification, 17 n°1
(2008).
Nota Bene: Per il
ricevimento
studenti e' possibile fissare un appuntamento via mail; si consiglia in
tal caso di mandare con un ragionevole anticipo (tre giorni)
una
mail all'indirizzo paolo.bellingeri-AT-unimib.it.