Dr Robert Johnson

Robert Johnson

Senior Lecturer in Pure Mathematics
Lead for Communication and Public Engagement for Centre for Combinatorics, Algebra and Number Theory

School of Mathematical Sciences
Queen Mary University of London

Research

extremal combinatorics, graph theory, probabilistic combinatorics

Interests

Robert Johnson is a member of the Centre for Combinatorics, Algebra and Number Theory in the School of Mathematical Sciences. He has research interests in several areas of combinatorics, particularly extremal problems on graphs, set systems and permutations, and the combinatorics of the discrete hypercube.

Publications

solid heart iconPublications of specific relevance to the Centre for Combinatorics, Algebra and Number Theory

2024

bullet iconOptimal Resistor Networks
Walters M and Johnson JR
Mathematika, Wiley 
06-09-2024

2023

Relevant PublicationPartial Shuffles by Lazy Swaps
Janzer B, Johnson JR and Leader I
Siam Journal On Discrete Mathematics, Society For Industrial & Applied Mathematics (Siam) vol. 37 (4), 2544-2557.  
30-10-2023
Relevant PublicationShattering k-sets with Permutations
Johnson JR and Wickes B
Order, Springer Nature vol. 41 (2), 419-436.  
20-06-2023

2020

Relevant PublicationThe $Q_2$-Free Process in the Hypercube
Johnson JR and Pinto T
The Electronic Journal of Combinatorics, The Electronic Journal of Combinatorics vol. 27 (4) 
13-11-2020
Relevant PublicationSynchronizing Times for $k$-sets in Automata
Behague NC and Johnson JR
 
27-08-2020
Relevant PublicationCorrelation for permutations
Johnson J, Leader I and Long E
Journal of Combinatorial Theory: Series A, Elsevier vol. 175 
28-04-2020

2017

Relevant PublicationTransitive Avoidance Games
JOHNSON JR, Leader I and Walters M
The Electronic Journal of Combinatorics, The Electronic Journal of Combinatorics 
31-03-2017
Relevant PublicationMulticolour Ramsey Numbers of Odd Cycles
JOHNSON JR and Day A
Journal of Combinatorial Theory, Series B, Academic Press vol. 124, 56-63.  
16-01-2017

2016

Relevant PublicationSaturated Subgraphs of the Hypercube
JOHNSON JR
Combinatorics, Probability and Computing, Cambridge University Press (Cup): Stm Journals vol. 26 (1), 52-67.  
19-09-2016

2014

Relevant PublicationSet Systems Containing Many Maximal Chains
JOHNSON JR, LEADER I and RUSSELL PA
Combinatorics Probability Computing, Cambridge University Press (Cup) vol. 24 (3), 480-485.  
09-10-2014

2013

Relevant PublicationTuran and Ramsey Properties of Subcube Intersection Graphs
Johnson JR and Markstrom K
Combinatorics Probability & Computing vol. 22 (1), 55-70.  
01-01-2013

2011

Relevant PublicationAn inductive construction for Hamilton cycles in Kneser graphs
Johnson JR
Electron J Comb vol. 18 (1) 
20-09-2011

2010

Relevant PublicationRandom Majority Percolation
Balister P, Bollobas B, Johnson JR and Walters M
Random Struct Algor, Wiley Online vol. 36 (3), 315-340.  
01-05-2010
Relevant PublicationVertex Turan problems in the hypercube
Johnson JR and Talbot J
J Comb Theory A, Elsevier/Science Direct vol. 117 (4), 454-465.  
01-05-2010
Relevant PublicationThe minimal density of triangles in tripartite graphs
Baber R, Johnson JR and Talbot J
Lms J Comput Math, Cambridge Journals Online vol. 13, 388-413.  
01-01-2010

2009

Relevant PublicationUniversal cycles for permutations
Johnson JR
Discrete Mathematics, Elsevier vol. 309 (17), 5264-5270.  
01-09-2009

2008

Relevant PublicationG-intersection theorems for matchings and other graphs
Johnson JR and Talbot J
Comb Probab Comput vol. 17 (4), 559-575.  
01-07-2008

2004

Relevant PublicationA disproof of the Fon-der-Flaass conjecture
Johnson JR
Comb Probab Comput vol. 13 (2), 195-201.  
01-03-2004
Relevant PublicationExplicit 2-Factorisations of the Odd Graph
JOHNSON JR and Kierstead HA
Order vol. 21, 19-27.  
01-02-2004
Relevant PublicationLong cycles in the middle two layers of the discrete cube
Johnson JR
J Comb Theory A vol. 105 (2), 255-271.  
01-02-2004