Newsletter, September 2015

News

• Congratulations to Cheryl Praeger, who was inducted into the Western Australian Science Hall of Fame.

• Congratulations to John Bamberg, who was promoted to Associate Professor.

• Congratulations to John Bamberg, who was awarded a UWA Vice-Chancellor's Mid-Career Research Award.

• An Honorary Doctorate of Science from Yazd University, Iran, was conferred on Cheryl Praeger during the 46th Annual Iranian Mathematical Society Conference, 24-28 August 2015. Here is a link to the ceremony.

• Melissa Lee participated in the 3rd Heidelberg Laureate Forum, Heidelberg, Germany, 23-28 August 2015.

• John Bamberg and Michael Giudici are now Managing Editors of the Electronic Journal of Combinatorics.

• Eric Swartz and Simon Smith have both finished their appointments at UWA.

• Stephen Glasby spoke at the Graduiertenkolleg Experimentelle und konstruktive Algebra, RWTH Aachen University, Germany, 2 July 2015.

• Irene Pivotto made research visits to Fuzou University, China (17-30 May 2015), Simon Fraser University, Canada (5-21 June 2015), and the University of Waterloo (21-28 June 2015), giving talks at Fuzou and Waterloo.

• Cheryl Praeger will give research seminars at Bu-Ali Sina University, Hamedan, Iran (August 12); University of Bristol (October 21); University of Lancaster (October 28); University of St Andrews (November 26).

• Melissa Lee will visit Nicola Durante at the University of Naples, Italy, 1-11 September 2015.

• Tomasz Popiel will visit Alice Niemeyer at RWTH Aachen University, Germany, 4-18 September 2015.

• Daniel Hawtin will attend a Summer School on Finite Groups and Related Geometrical Structures, Venice, Italy, 7-8 September 2015.

• Daniel Hawtin will visit Neil Gillespie at Bristol University (until 12 October 2015) and Cheryl Praeger at the University of Oxford (until 17 November 2015).

• Joy Morris (University of Lethbridge) is the 2016 Cheryl E. Praeger Visiting Fellow.

Visitors

• Qing Xiang (University of Delaware), 17-29 July 2015.

• James Parkinson (University of Sydney), 15-18 September 2015.

SymOmega

SymOmega is a mathematical blog run by CMSC members John Bamberg, Michael Giudici and Gordon Royle.

Conferences

• 5th Biennial Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM), University of Saskatchewan, Canada, 1-4 June 2015. Irene Pivotto gave a talk.

• 8th Slovenian Conference on Graph Theory, Kranjska Gora, Slovenia, 21-27 June 2015. Michael Giudici was a plenary speaker. Luke Morgan, Tomasz Popiel and Gabriel Verret gave talks.

• Workshop on Structural Matroid Theory, La Vacquerie, France, 5-10 July 2015. Irene Pivotto and Gordon Royle gave talks.

• 25th British Combinatorial Conference, University of Warwick, UK, 6-10 July 2015. Joanna Fawcett, Melissa Lee and Tomasz Popiel gave talks.

• London Mathematical Society Regional Meeting, University of Warwick, UK, 7 July 2015. Michael Giudici, Stephen Glasby, Luke Morgan and Cheryl Praeger attended.

• Conference on finite simple groups and related topics, University of Warwick, UK, 8-10 July 2015. Michael Giudici, Stephen Glasby, Luke Morgan, and Cheryl Praeger attended.

• Workshop on New Directions for the Tutte Polynomial: Extensions, Interrelations, and Applications, Royal Holloway University, UK, 11-14 July 2015. Irene Pivotto and Gordon Royle gave talks.

• Simple groups, representations, and related topics: A conference in honour of Martin Liebeck and Jan Saxl, University of Cambridge, UK, 13-15 July 2015. Cheryl Praeger and Joanna Fawcett gave talks. Michael Giudici, Stephen Glasby, Melissa Lee, Luke Morgan and Tomasz Popiel attended.

• London Mathematical Society - EPSRC Durham Symposium on Permutation Groups and Transformation Semigroups, Durham University, UK, 20-30 July 2015. Michael Giudici and Gordon Royle gave talks. Cheryl Praeger attended.

• Banff International Research Station (BIRS) Prairie Discrete Math Workshop (15w2206), Banff, Canada, 7-9 August 2015. Gabriel Verret was a plenary speaker.

• 46th Annual Iranian Mathematical Society Conference, Yazd, Iran, 24-28 August 2015. Cheryl Praeger gave a plenary lecture.

• Joint London Mathematical Society - European Mathematical Society Mathematical Weekend, Birmingham, UK, 18-20 September 2015. Cheryl Praeger is an invited speaker. Luke Morgan will give a talk.

• Finite Simple Groups: Thirty Years of the Atlas and Beyond: a conference to celebrate 30 years of the Atlas of Finite Groups, 20 years of the Atlas of Brauer Characters, and to honor John Conway. Princeton, USA, 2-5 November 2015. Cheryl Praeger is an invited speaker.

• 39th Australasian Conference on Combinatorial Mathematics and Combinatorial Computing (ACCMCC), The University of Queensland, 7-11 December 2015. Gordon Royle is an invited speaker, and John Bamberg is attending.

• Ada Lovelace Symposium, Oxford, UK, 9-10 December 2015. Cheryl Praeger will be a member of a panel discussing reactions to Ada Lovelace as an icon for women in science.

Papers

Published papers

• J. Bamberg and T. Penttila, Completing Segre's proof of Wedderburn's little theorem, Bulletin of the London Mathematical Society 47 (2015) 483-492.

• B. P. Corr, T. Popiel and C. E. Praeger, Nilpotent-independent sets and estimation in matrix algebras London Mathematical Society Journal of Computation and Mathematics 18(2015) 404-418.

• A. Devillers, W. Jin, C.-H. Li and C. E. Praeger, Finite 2-geodesic transitive graphs of prime valency, Journal of Graph Theory 80 (2015) 18-27.

• Y.-Q. Feng, C.-H. Li and J.-X. Zhou, Symmetric cubic graphs with solvable automorphism groups, European Journal of Combinatorics 45 (2015) 1-11.

• B. Guenin, I. Pivotto and P. Wollan, Displaying blocking pairs in signed graphs, European Journal of Combinatorics 51 (2016) 135-164.

• S.-T. Guo, Y.-Q. Feng and C.-H. Li, Edge-primitive tetravalent graphs, Journal of Combinatorial Theory, Series B 112 (2015) 124-137.

• C.-H. Li, Z.-P. Lu and G.-X. Wang, On edge-transitive graphs of square-free order, Electronic Journal of Combinatorics 22 (2015) #P3.25.

• S. Linton, A. C. Niemeyer and C. E. Praeger, Identifying long cycles in finite alternating and symmetric groups acting on subsets, Journal of Algebra, Combinatorics, Discrete Structures and Applications 2 (2015) 117-149.

Accepted papers

• J. Bamberg, M. Lee and E. Swartz, A note on relative hemisystems of Hermitian generalised quadrangles, to appear in Designs, Codes and Cryptography.

• J. Chen, C.-H. Li and W.-J. Liu, On isomorphisms of vertex-transitive graphs, to appear in Journal of the Australian Mathematical Society.

• B. P. Corr and C. E. Praeger, Normal edge-transitive cayley graphs of Frobenius groups, to appear in Journal of Algebraic Combinatorics.

• S. P. Glasby, F. Lubeck, A. C. Niemeyer and C. E. Praeger, Primitive prime divisors and the n-th cyclotomic polynomial, to appear in Journal of the Australian Mathematical Society.

• M. Iradmusa and C. E. Praeger, Two-sided group digraphs, to appear in Journal of Graph Theory.

• L. Morgan and C. M. Roney-Dougal, A Note On The Probability Of Generating Alternating Or Symmetric Groups, to appear in Archiv der Mathematik.

• J. Morris, P. Spiga and G. Verret, Semiregular automorphisms of cubic vertex-transitive graphs, to appear in Electronic Journal of Combinatorics.

• G. F. Royle and A. D. Sokal, Linear bound in terms of maxmaxflow for the chromatic roots of series-parallel graphs, to appear in SIAM Journal on Discrete Mathematics.

• P. Spiga and G. Verret, On the order of vertex-stabilisers in vertex-transitive graphs with local group Cp x Cp or Cp wr C2, to appear in Journal of Algebra.

Submitted papers

• J. Bamberg, J. De Beule and F. Ihringer, New non-existence proofs for ovoids of Hermitian polar spaces and hyperbolic quadrics.

• J. Bamberg, C.-H. Li and E. Swartz, A classification of finite antiflag-transitive generalized quadrangles.

• J. Bamberg, T. Popiel and C. E. Praeger, Point-primitive, line-transitive generalised quadrangles of holomorph type.

• J. B. Fawcett, Locally triangular graphs and normal quotients of the n-cube.

• J. B. Fawcett, E. A. O'Brien and J. Saxl, Regular orbits of symmetric and alternating groups.

• M. Giudici and B. Kuzma, Realizability problem for commuting graphs.

• C.-H. Li, C. E. Praeger and C. Schneider, Inclusions of innately transitive groups into wreath products in product action with applications to 2-arc-transitive graphs.

• L. Morgan and T. Popiel, Generalised polygons admitting a point-primitive almost simple group of Suzuki or Ree type.

• P. Potocnik, P. Spiga and G. Verret, Groups of order at most 6 000 generated by two elements, one of which is an involution, and related structures.