buondì,
questa settimana sono in programma due seminari di geometria, sempre
alle 14.30 di mercoledì e giovedì. Siete tutti invitati.
MERCOLEDI' 13 MARZO 2013
SEMINARI DI GEOMETRIA
14:30-15:30, Sala Seminari (Dip. Matematica)
The hyperbolic torsion polynomial and a conjecture of Dunfield-Friedl-Jackson
Takayuki Morifuji (Keio University)
Abstract:
The hyperbolic torsion polynomial was introduced
by Dunfield, Friedl and Jackson, and they conjectured that it
determines the knot genus and fibering of hyperbolic knots.
In this talk, we show the conjecture is true for twist knots.
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GIOVEDI' 14 MARZO 2013
SEMINARI DI GEOMETRIA
14:30-16:00, Sala Seminari (Dip. Matematica)
Meridional and non-meridional epimorphisms between knot groups
Masaaki Suzuki (Akita University)
Abstract:
An epimorphism between knot groups is called meridional if a meridian
is sent to a meridian.
We determined whether there exists a meridional epimorphism between
knot groups in case of the knots with up to 11 crossings. In this
talk, we show some examples of non-meridional epimorphisms.