Joint seminar Ljubljana-Trieste

[Emilia Mezzetti]

UNIVERSITA' DEGLI STUDI DI TRIESTE
DIPARTIMENTO DI MATEMATICA E INFORMATICA  - DMI

Joint Mathematical Seminar Ljubljana - Trieste


Monday, 8 February 2010, at 12.00

Tomaz Pisanski (University of Ljubljana)
Applications of symmetries of combinatorial maps

In 1980 combinatorial maps were introduced by A. Vince in his thesis. 
They are a useful tool for investigation of various combinatorial 
structures such as maps or abstract polytopes. Each combinatorial map 
admits a unique quotient "type graph". Using elementary methods 
related to type graphs we derive the 14 types of edge-transitive maps 
first studied by J. Graver and M. Watkins in 1997. Applications to 
abstract polytopes are also mentioned.



Venue: Seminar Room of DMI (room 334, H2 building, Via Valerio 12/1, 
3rd floor).
Everybody interested is much welcome to attend.

-- 
Prof. Emilia Mezzetti

Dipartimento di Matematica e Informatica
Universita' di Trieste
Via Valerio 12/1
34127 Trieste, Italia

Stanza 227, II piano
e-mail: mezzette at units.it
tel. studio (+39) 040 558 2650
skype: emiliamezzetti
tel. Segreteria Dip.: (+39) 040 558 2635 oppure 2618
fax: (+39) 040 558 2636
http://www.dmi.units.it/~mezzette/