Symmetries of Discrete Objects    

Conference and MAGMA Workshop
Queenstown, New Zealand, 12-17 February 2012


Conference Programme


Abstracts for all talks (including the MAGMA mini-courses) can be downloaded in a pdf file from here.



Monday 13th February

08:45-09:00   Welcome and opening remarks [Marston Conder and Tomaz Pisanski]
PDF Slides

09:00-09.45   Gareth Jones (Southampton), Automorphism groups of Beauville surfaces   [Keynote talk]
[Slides not provided]

09:45-10:10   Young Soo Kwon (Yeungnam), Classification of some regular Cayley maps on dihedral groups
PDF Slides

10:10-10:35   Ian Wanless (Melbourne), Autotopisms of Latin squares
PDF Slides

10:35-11:00   Tea/coffee

11:00-11:25   Tomaz Pisanski (Ljubljana), GI graphs and their groups
PDF Slides

11:25-11:50   Marsha Minchenko (Melbourne), Some vertex transitive Integral graphs
PDF Slides

11:50-12:05   Jan Karabas (Banska Bystrica), Discrete group actions on orientable surfaces   [15 mins]
PDF Slides

12:05-12:30   Yanquan Feng (Beijing), One-regular graphs
PDF Slides

12:30-14:00   Lunch

14:00-14:45   Brendan McKay (Canberra), Computing the symmetries of combinatorial objects   [Keynote talk]
PDF Slides

14:45-15:10   Steve Wilson (Flagstaff), Tricirculant edge-transitive tetravalent graphs
PDF Slides

15:10-15:35   Sanming Zhou (Melbourne), Gossiping and routing in second-kind Frobenius graphs
PDF Slides

15:35-16:00   Tea/coffee

16:00-16:45   Don Taylor (Sydney), Overview of Magma   [MAGMA mini-course, Part 1]
PDF Slides   Magma DEMO (text file)

16:45-17:30   Dimitri Leemans (Auckland), Permutation groups   [MAGMA mini-course, Part 1]
PDF Slides   Magma DEMO (text file)


Tuesday 14th February

09:00-09.45   Ruth Kellerhals (Fribourg), Highly symmetric hyperbolic polytopes   [Keynote talk]
PDF Slides

09:45-10:10   Aleksander Malnic (Ljubljana), On the split structure of lifted groups, I
PDF Slides

10:10-10:35   Rok Pozar (Ljubljana), On the split structure of lifted groups, II
PDF Slides

10:35-11:00   Tea/coffee

11:00-11:25   Thomas Tucker (Hamilton, NY), Distinguishing maps: angles, cliques, and transpositions
PDF Slides

11:25-11:50   Wilfried Imrich (Leoben), Distinguishing infinite graphs
PDF Slides

11:50-12:05   Martin Macaj (Bratislava), On the Wilson operators   [15 mins]
PDF Slides

12:05-12:30   Frank Nijhoff (Leeds), A new variational principle for discrete integrable systems
PDF Slides

12:30-14:00   Lunch

14:00-14:25   Problem session 1
PDF Slides of Steve Wilson's 'Hole Problem'

14:25-14:50   Milagros Izquierdo (Linkoping), On the connectedness of the branch locus of moduli spaces of Riemann surfaces   [15 mins+]
PDF Slides

14:50-15:35   Eamonn O'Brien (Auckland), Matrix groups   [MAGMA mini-course, Part 1]
Magma Demo (text file)   Log file (text file)

15:35-16:00   Tea/coffee

16:00-16:45   Marston Conder (Auckland), Finitely-presented groups   [MAGMA mini-course, Part 1]
PDF Slides

16:45-17:30   Dimitri Leemans (Auckland), Subgroup structure   [MAGMA mini-course, Part 2]
PDF Slides   O'Nan Demo (text file)


Wednesday 15th February

09:00-09.45   Barry Monson (New Brunswick), Abstract polytopes: regular, semiregular and chiral   [Keynote talk]
PDF Slides

09:45-10:10   Michael Giudici (Perth), On imprimitive rank 3 permutation groups
PDF Slides

10:10-10:35   Sang-Eon Han (Jeonbuk, Korea), Existence of non-ultra regular covering spaces whose automorphism groups are not trivial
[Slides not provided]

10:35-11:00   Tea/coffee

11:00-11:25   Alexander Ivanov (London), Towards identification of the Majorana representations of A_12
[Slides not provided]

11:25-11:50   Grzegorz Gromadzki (Gdansk), On finite groups of self-homeomorphisms of compact topological surfaces with invariant subsets
PDF Slides

11:50-12:05   Young Ho Kim (Kyungpook, Korea), Chord properties in Euclidean geometry   [15 mins]
PDF Slides

12:05-12:30   Jozef Siran (Bratislava), Imprimitivity of locally finite, 1-ended, planar graphs
PDF Slides

12:30-13:30   Lunch

13:45- Excursion


Thursday 16th February

09:00-09.45   Gabriel Verret (Ljubljana), A census of cubic vertex-transitive graphs   [Keynote talk]
PDF Slides

09:45-10:10   Shaofei Du (Beijing), Regular embeddings of multipartite graphs
PDF Slides

10:10-10:35   Katja Bercic (Ljubljana), Arc-transitive graphs of order 2pq
PDF Slides

10:35-11:00   Tea/coffee

11:00-11:25   Akos Seress (Perth/Columbus), The diameter of permutation groups
PDF Slides

11:25-11:50   Bernardo Rodrigues (Natal), Codes from lattice and related graphs, and permutation decoding
PDF Slides

11:50-12:05   Klavdija Kutnar (Koper), Quasi m-Cayley strongly regular graphs   [15 mins]
PDF Slides

12:05-12:30   Jin-Xin Zhou (Beijing), On vertex-transitive non-Cayley graphs
PDF Slides

12:30-14:00   Lunch

14:00-14:25   Problem session 2

14:25-14:50   Wujie Shi (Chongqing), The quantitative characterization of all finite simple groups   [15 mins+]
PDF Slides

14:50-15:35   Don Taylor (Sydney), Coxeter groups and complex reflection groups   [MAGMA mini-course, Part 2]
PDF Slides   Magma Demo 1 (text file)   Magma Demo 2 (text file)

15:35-16:00   Tea/coffee

16:00-16:45   Eamonn O'Brien (Auckland), Polycyclic groups   [MAGMA mini-course, Part 2]
Magma Demo (text file)   Log file (text file)

16:45-17:30   Marston Conder (Auckland), Finitely-presented groups, cont.   [MAGMA mini-course, Part 2]
Magma Demo (text file)   Log file (text file)


Friday 17th February

09:00-09.45   Martin Liebeck (London), Orbits of linear groups   [Keynote talk]
PDF Slides

09:45-10:10   Gunter Steinke (Christchurch), 2-transitivity in finite circle geometries
PDF Slides

10:10-10:35   Ittay Weiss (Fiji), Towards a geometry of operads: dendroidal polytopes
PDF Slides

10:35-11:00   Tea/coffee

11:00-11:25   Juergen Wolfart (Frankfurt), Galois actions on regular dessins of small genera
PDF Slides

11:25-11:40   Izumi Miyamoto (Yamanashi), Computation of normalizers of intransitive permutation groups in symmetric groups   [15 mins]
PDF Slides

11:40-11:55   Pedram Hekmati (Adelaide), Group cocycles and higher representation theory   [15 mins]
PDF Slides

11:55-12:00   Closing

12:00-13:30   Lunch



Abstracts for all talks (including the MAGMA mini-courses) can be downloaded in a pdf file from here.





Organising Committee



Sponsors

We are grateful to the following organisations for their support of this conference:

           

Support from the European Science Foundation comes through the EuroCoREs programme, and in particular, thanks to the involvement of numerous participants in the
GReGAS project of the EuroGIGA collaborative research programme on Graphs in Geometry and Algorithms.