David Galvin's Research

My research is in discrete probability, combinatorics and graph theory; in particular, extremal enumerative problems, set partitions, and the applications of combinatorial ideas to the study of phase transitions in statistical physics models and long-range correlations in discrete random structures. You can find a 2019 summary of my recent research here. Below are links to my papers (not necessarily the final versions); most of these can also be found at arXiv.org.

For links to journal versions of these papers, please go here; note that a Notre Dame netID is needed to access this page.



  1. Generalized Tuza's conjecture for random hypergraphs (with A. Basit), arXiv:2204.04568
  2. 2024

  3. Reciprocals of thinned exponential series (with J. Engbers and C. Smyth), Australasian Journal of Combinatorics 89 (2024), 61-96
  4. On the zeroes of hypergraph independence polynomials (with G. McKinley, W. Perkins, M. Sarantis and P. Tetali), Combinatorics, Probability and Computing 33 (2024), 65-84
  5. 2023

  6. Totally non-negativity of a family of change-of-basis matrices (with Y. Zhang), Linear Algebra and its Applications 676 (2023), 88-103
  7. 2022

  8. Enumerating Threshold Graphs and Some Related Graph Classes (with G. Wesley and B. Zacovic), Journal of Integer Sequences 25 (2022), Article 22.2.7
  9. Independent set and matching permutations (with T. Ball, C. Hyry and K. Weingartner), Journal of Graph Theory 99 (2022), 40-57
  10. 2021

  11. On the independent set sequence of a tree (with A. Basit), Electronic Journal of Combinatorics, 28 (2021), article P3.23
  12. 2020

  13. Cutting lemma and Zarankiewicz's problem in distal structures (with A. Chernikov and S. Starchenko), Selecta Mathematica (New Series), 26 (2020), article 25
  14. Total non-negativity of some combinatorial matrices (with A. Pacurar), Journal of Combinatorial Theory Series A, 172 (2020), article 105179
  15. 2019

  16. Phase Coexistence for the Hard-Core Model on Z^2 (with A. Blanca, Y. Chen, D. Randall and P. Tetali), Combinatorics, Probability and Computing, 28 (2019), 1-22. The data sets used in this paper are available here
  17. The game of plates and olives (with T. Carroll), Electronic Journal of Combinatorics 26 (2019), P1.18
  18. Restricted Stirling and Lah number matrices and their inverses (with J. Engbers and C. Smyth), Journal of Combinatorial Theory Series A 161 (2019), 271-298
  19. Independent sets in the discrete hypercube (an expository article)
  20. 2018

  21. The independent set sequence of some families of trees (with J. Hilyard), Australasian Journal of Combinatorics 70 (2018), 236-252
  22. 2017

  23. Extremal H-colorings of trees and 2-connected graphs (with J. Engbers), Journal of Combinatorial Theory Series B 122 (2017), 800-814
  24. 2016

  25. Guest editors' foreword (with D. Chakrabarty), Theory of Computing 12 (2016), Article 8 (Special issue: APPROX-RANDOM 2014)
  26. On the independence ratio of distance graphs (with J. Carraher, S. Hartke, J. Radcliffe and D. Stolee), Discrete Mathematics 339 (2016), 3058-3072
  27. Asymptotic normality of some graph sequences, Graphs and Combinatorics 32 (2016), 639-647
  28. 2015

  29. Phase coexistence and torpid mixing in the 3-coloring model on Z^d (with J. Kahn, D. Randall and G. Sorkin), SIAM Journal of Discrete Mathematics 29 (2015), 1223-1244
  30. Counting colorings of a regular graph, Graphs and Combinatorics 31 (2015), 629--638
  31. Combinatorially interpreting generalized Stirling numbers (with J. Engbers and J. Hilyard), European Journal of Combinatorics 43 (2015), 32--54
  32. 2014

  33. Three tutorial lectures on entropy and counting (notes prepared to accompany a series of tutorial lectures given at the 1st Lake Michigan Workshop on Combinatorics and Graph Theory, Western Michigan University, March 15--16 2014), arXived
  34. Counting independent sets of a fixed size in graphs with given minimum degree (with J. Engbers), Journal of Graph Theory 76 (2014), 149--168
  35. 2013

  36. Phase Coexistence and Slow Mixing for the Hard-Core Model on Z^2 (with A. Blanca, D. Randall and P. Tetali), Lecture Notes in Computer Science 8096 (Proceedings of APPROX/RANDOM 2013) (2013), 379--394. The data sets used in this paper are available here
  37. Stirling numbers of forest and cycles (with Do Trong Thanh), Electronic Journal of Combinatorics 20 (2013), #P73
  38. Maximizing H-colorings of a regular graph, Journal of Graph Theory 73 (2013), 66--84
  39. 2012

  40. H-coloring tori (with J. Engbers), Journal of Combinatorial Theory Series B 102 (2012), 1110-–1133
  41. The independent set sequence of regular bipartite graphs, Discrete Mathematics 312 (2012), 2881--2892
  42. H-colouring bipartite graphs (with John Engbers), Journal of Combinatorial Theory Series B 102 (2012), 726-–742
  43. Reverse Mathematics and infinite traceable graphs (with P. Cholak and R. Solomon), Mathematical Logic Quarterly 58 (2012), 18--28
  44. 2011

  45. Two problems on independent sets in graphs, Discrete Mathematics 311 (2011), 2105--2112
  46. The multi-state hard core model on a regular tree (with Fabio Martinelli, Kavita Ramanan and Prasad Tetali), SIAM Journal of Discrete Mathematics 25 (2011), 894--916
  47. The number of independent sets in a graph with small maximum degree (with Yufei Zhao), Graphs and Combinatorics 27 (2011), 177--186. The java programs used in this paper (source files, compiled programs and documentation) are available here in a compressed (zipped) folder.
  48. A threshold phenomenon for random independent sets in the discrete hypercube, Combinatorics, Probability and Computing 20 (2011), 27--51
  49. 2009

  50. An upper bound for the number of independent sets in regular graphs, Discrete Mathematics 309 (2009), 6635--6640
  51. Matchings and Independent Sets of a Fixed Size in Regular Graphs (with Teena Carroll and Prasad Tetali), Journal of Combinatorial Theory Series A 116 (2009), 1219--1227)
  52. 2008

  53. Sampling independent sets in the discrete torus, Random Structures and Algorithms 33 (2008), 356--376
  54. 2007

  55. Sampling 3-colourings of regular bipartite graphs, Electronic Journal of Probability 12 (2007), 481--497
  56. Torpid Mixing of Local Markov Chains on 3-Colorings of the Discrete Torus (with Dana Randall), Proceedings of the Eighteenth Annual ACM--SIAM Symposium on Discrete Algorithms (2007), 376--384
  57. 2006

  58. Bounding the partition function of spin systems, Electronic Journal of Combinatorics 13 (2006), #R72
  59. Slow mixing of Glauber Dynamics for the hard-core model on regular bipartite graphs (with Prasad Tetali), Random Structures and Algorithms 28 (2006) 427--443
  60. Global connectivity from local geometric constraints for sensor network with various wireless footprints (with Raissa D'Souza, Cris Moore and Dana Randall), Proceedings of the Fifth International Conference on Information Processing in Sensor Networks (2006), 19--26
  61. 2004

  62. On weighted graph homomorphisms (with Prasad Tetali), DIMACS series in discrete mathematics and theoretical computer science 63 (Graphs, Morphisms and Statistical Physics) (2004), 97--104
  63. On phase transition in the hard-core model on Z^d (with Jeff Kahn), Combinatorics, Probability and Computing 13 (2004), 137--164
  64. Slow mixing of the Glauber Dynamics for the hard-core model on the Hamming cube (with Prasad Tetali), Proceedings of the Fifteenth Annual ACM--SIAM Symposium on Discrete Algorithms (2004), 459--460
  65. Entropy and graph homomorphisms, Oberwolfach reports 1 (2004), 30--32
  66. 2003

  67. On homomorphisms from the Hamming cube to Z, Israel Journal of Mathematics 138 (2003), 189--213
  68. 2002

  69. Two problems involving the notion of phase transition (PhD thesis written under the direction of Jeff Kahn, Rutgers University, October 2002), ProQuest Dissertations and Theses (2002)

Miscellaneous other papers

  1. Ramanujan Graphs (Essay for Part III of Mathematical Tripos, University of Cambridge, June 1996)
  2. [4]^2 Tic-Tac-Toe is a draw
  3. Erdos's proof of Bertrand's postulate (an exposition of Erdos's elementary proof that there is always a prime between n and 2n)
  4. Ultrafilters, with applications to analysis, social choice and combinatorics (an introduction to the basics of ultrafilters, with some applications)
  5. A topological approach to evasiveness (an introduction to the use of topological ideas in the study of evasive properties, based on a paper by Kahn, Saks and Sturtevant)
  6. Bregman's theorem and extensions (an exposition of Radhakrishnan's entropy proof of Bregman's theorem, and some results and conjectures around the theorem)

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