Profile

I am a member of the Combinatorics group in the School of Mathematical Sciences. I have interests in several areas of combinatorics, particularly extremal problems on graphs, set systems and permutations, and the combinatorics of the discrete hypercube.

I completed my PhD at the University of Cambridge in 2003 and joined Queen Mary in 2004 following a brief spell at the London School of Economics.

Research

Publications

• JOHNSON JR, Leader I, Walters M (2017). Transitive Avoidance Games. nameOfConference

  doi

  http://qmro.qmul.ac.uk/xmlui/handle/123456789/22494
• JOHNSON JR, Day A (2017). Multicolour Ramsey Numbers of Odd Cycles. nameOfConference

  10.1016/j.jctb.2016.12.005

  http://qmro.qmul.ac.uk/xmlui/handle/123456789/18964
• JOHNSON JR (2016). Saturated Subgraphs of the Hypercube. nameOfConference

  10.1017/S0963548316000316

  http://qmro.qmul.ac.uk/xmlui/handle/123456789/15713
• Johnson JR, Leader I, Russell PA (2015). Set Systems Containing Many Maximal Chains. nameOfConference

  10.1017/S0963548314000510

  qmroHref
• Johnson JR, Markstrom K (2013). Turan and Ramsey Properties of Subcube Intersection Graphs. nameOfConference

  10.1017/S0963548312000429

  qmroHref
• Johnson JR (2011). An inductive construction for Hamilton cycles in Kneser graphs. nameOfConference

  doi

  qmroHref
• Balister P, Bollobas B, Johnson JR et al. (2010). Random Majority Percolation. nameOfConference

  10.1002/rsa.20281

  qmroHref
• Johnson JR, Talbot J (2010). Vertex Turan problems in the hypercube. nameOfConference

  10.1016/j.jcta.2009.07.004

  qmroHref
• Baber R, Johnson JR, Talbot J (2010). The minimal density of triangles in tripartite graphs. nameOfConference

  10.1112/S1461157009000436

  qmroHref
• Johnson JR (2009). Universal cycles for permutations. nameOfConference

  10.1016/j.disc.2007.11.004

  qmroHref
• Johnson JR, Talbot J (2008). G-intersection theorems for matchings and other graphs. nameOfConference

  10.1017/S0963548308009206

  qmroHref
• Johnson JR (2004). A disproof of the Fon-der-Flaass conjecture. nameOfConference

  10.1017/S0963548303005960

  qmroHref
• JOHNSON JR, Kierstead HA (2004). Explicit 2-Factorisations of the Odd Graph. nameOfConference

  10.1007/s11083-004-3344-x

  qmroHref
• Johnson JR (2004). Long cycles in the middle two layers of the discrete cube. nameOfConference

  10.1016/j.jeta.2003.11.004

  qmroHref

PhD Supervision

Previous PhD students supervised:

• Trevor Pinto (completed 2016)
• A Nicholas Day (completed 2017)

Current PhD students:

• Natalie Behague

I welcome enquiries from potential PhD applicants.