Assistant Professor
Department of Combinatorics and Optimization
University of Waterloo
Office: MC 6012
Phone: 1 (519) 888 4567 (37529)
Email: pu dot gao at uwaterloo dot ca
Research
Random graph theory, asymptotic graph enumeration, theoretical computer science, randomized algorithms and stochastic processes.
Publications
Preprints
- P. Gao, J. Mausberg, and P. Nelson.
Evolution of random representable matroids: minors, circuits, connectivity and the critical number.
[arxiv]
- A. Frieze, P. Gao, C. MacRury, P. Pra?at, G. Sorkin.
Building Hamiltonian cycles in the semi-random graph process in less than 2n rounds.
[arxiv]
- P. Gao and H. Koerts.
On the pre- and post-positional semi-random graph processes.
[arxiv]
- P. Gao and P. Nelson.
Minors of matroids represented by sparse random matrices over finite
fields.
[arxiv]
- P. Gao and Y. Ohapkin.
Embedding theorems for random graphs with specified degrees.
[arxiv]
-
P. Gao, M. Isaev and B. McKay.
Kim-Vu's sandwich conjecture is true for d>=log^4 n.
[arxiv]
- P. Gao, R. Ramadurai, I. Wanless and N. Wormald.
Counterexamples on matchings in hypergraphs and full rainbow matchings in graphs.
[arxiv]
- P. Gao.
Analysis of the parallel peeling algorithm: a short proof.
[arxiv]
Published or accepted
- A. Coja-Oghlan, P. Gao, M. Hahn-Klimroth, J. Lee, N. Müller, and M. Rolvien.
The full rank condition for sparse random matrices.
[arxiv]
Combinatorics, Probability, and Computing, 2023 (accepted).
- P. Gao, C. MacRury and P. Pralat.
Perfect Matchings in the Semi-random Graph Process.
[arxiv]
SIAM J. Discret. Math. 36(2): 1274-1290, 2022.
-
A. Arman, P. Gao and N. Wormald.
Linear-time uniform generation of random sparse contingency tables with specified marginals.
[arxiv]
Annals of Applied Probability, 2021 (accepted).
-
P. Gao.
Triangles and subgraph probabilities in random regular graphs.
[arxiv]
Elec. J. Comb, 2023 (accepted).
- Pu Gao, Calum MacRury, and Pawel Pralat.
A fully adaptive strategy for Hamiltonian cycles in the semi-random graph process.
[arxiv]
Proc. RANDOM 2022.
- P. Gao, M. Isaev and B. McKay.
Sandwiching dense random regular graphs between binomial random graphs.
[download]
Probability Theory and Related Fields, 2022.
(This article contains the dense sandwiching part of this, with several corrections.)
- P. Gao and Y. Ohapkin.
Subgraph probability of random graphs with specified degrees and applications to chromatic number and connectivity.
[arxiv]
Random Struct. Algorithms, accepted.
- L. Brick, P. Gao and A. Southwell.
The threshold of symmetry in random graphs with specified degree sequences.
[arxiv]
SIAM Journal on Discrete Mathematics, accepted.
-
P. Gao.
The number of perfect matchings, and the nesting properties, of random regular graphs.
[arxiv]
Random Struct. Algorithms, accepted.
- P. Gao, B. Kaminski, C. MacRury and P. Pralat.
Hamilton cycles in the semi-random graph process.
[arxiv]
European Journal of Combinatorics 99 (2022): 103423.
- P. Gao and C. Greenhill.
Mixing time of the switch Markov chain and stable degree sequences.
[arxiv]
Discrete Applied Mathematics 291 (2021): 143-162.
- M. Anastos, A. Frieze, and P. Gao.
Hamiltonicity of random graphs in the stochastic block model.
[arxiv]
SIAM Journal on Discrete Mathematics 35.3 (2021): 1854-1880.
- P. Gao, R. van der Hofstad, A. Southwell and C. Stegehuis.
Counting triangles in power-law uniform random graphs.
[arxiv]
Elec. J. Combinatorics, 27(3), (2020), P3.19.
- P. Gao, R. Ramadurai, I. Wanless and N. Wormald.
Full rainbow matchings in graphs and hypergraphs.
[arxiv]
Combinatorics, Probability and Computing (2021): 1-19.
- A. Coja-Oghlan, A. Ergur, P. Gao, S. Hetterich, M. Rolvien.
The rank of sparse random matrices.
[arxiv]
Proc. SODA 2020 (extended abstract).
A preliminary version titled "The rank of random matrices over finite fields" can be found [here].
- P. Gao, M. Isaev and B. McKay.
Sandwiching random regular graphs between binomial random graphs.
[arxiv]
Proc. SODA 2020 (extended abstract).
- P. Gao and C. Greenhill.
Uniform generation of spanning regular subgraphs of a dense graph.
[arxiv]
Electronic Journal of Combinatorics, accepted.
- A. Arman, P. Gao, N. Wormald.
Fast uniform generation of random graphs with given degree sequences.
[arxiv]
FOCS2019, pp. 1371-1379.
Random Struct. Algorithms, accepted.
- P. Ayre, A. Coja-Oghlan, P. Gao, N. Müller.
The satisfiability threshold for random linear equations.
[arxiv]
Combinatorica, accepted.
- P. Gao and N. Wormald.
Uniform generation of random graphs with power-law degree sequences.
[arxiv]
SODA 2018: 1741-1758 (Extended abstract).
- P. Gao.
The stripping process can be slow: part II.
[arxiv]
Siam Journal on Discrete Mathematics, accepted.
- P. Gao, X. Perez-Gimenez and C. M. Sato.
Arboricity and spanning-tree packing of random graphs. [arxiv]
Random Struct. Algorithms, accepted.
Extended abstract published in SODA 2014, 317-326. [conference version]
-
P. Gao and N. Wormald.
Uniform generation of random regular graphs. [arxiv]
Siam Journal of Computing, 46(4): 1395-1427.
Extended abstract published in Proc. FOCS 2015, 1218-1230. [conference version]
- P. Gao and M. Molloy.
Inside the clustering window for random linear equations.
[arxiv]
Random Struct. Algorithms52(2): 197-218 (2018)
- P. Gao and M. Molloy.
The stripping process can be slow: part I.
[arxiv]
Random Struct. Algorithms, accepted.
- P. Gao and C. M. Sato.
A transition of limiting distributions of large matchings in random graphs. [arxiv]
Journal of Combinatorial Theory, Series B, 116: 57-86, 2016.
- P. Gao.
On the geometric Ramsey numbers of trees. [arxiv]
Discrete Mathematics, 339(1): 375-381, 2016.
- P. Gao and N. Wormald.
Enumeration of graphs with a heavy-tailed degree sequence.
[arxiv]
Advances in Mathematics, 287: 412-450, 2016.
- J. Cibulka, P. Gao, M. Krcal, T. Valla and P. Valtr.
On the geometric Ramsey number of outerplanar graphs. [arxiv]
Discrete & Computational Geometry, 53(1): 64-79, 2015.
Extended abstract published in Eurocomb 2013, 171-176.
- P. Gao, N. C. Wormald.
Orientability thresholds of random hypergraphs. [arxiv]
Combinatorics, Probability & Computing 24(5): 774-824 (2015).
Extended abstract (titled: Load balancing and orientability thresholds of random hypergraphs) published in Proc. STOC 2010, 97-104. [conference version]
- P. Gao.
The first k-regular subgraph is large. [arxiv]
Combinatorics, Probability & Computing, 23(3): 412-433 (2014).
- P. Gao.
Sandwiching a densest subgraph by consecutive cores. [ pdf]
Random Struct. Algorithms, 47(2): 341-360, 2015.
- E. Ebrahimzade, F. Farczadi, P. Gao, A. Mehrabian, C. Sato, N. Wormald and J. Zung.
On the longest path and the diameter in random Apollonian networks. [arxiv]
Random Struct. Algorithms, 45(4): 703-725, 2014.
Extended abstract published in Electronic Notes in Discrete Mathematics, 43, 355-365. [conference version]
- P. Gao.
Uniform generation of d-factors in dense host graphs. [pdf]
Graphs Combin. 30 (2014), no. 3, 581-589.
- P. Gao.
Distributions of sparse spanning subgraphs in random graphs. [arxiv]
SIAM Journal on Discrete Mathematics, 27 (2013), no. 1, 386-401.
- P. Gao.
Distribution of the number of spanning regular subgraphs in random graphs. [pdf]
Random Struct. Algorithms 43 (2013), no. 3, 338-353.
- P. Gao, Y. Su and N. C. Wormald.
Induced subgraphs in sparse random graphs with given degree sequence [pdf]
European Journal of Combinatorics, 33(6): 1142-1166 (2012).
- P. Gao.
The connectivity of the random regular graphs generated by the pegging algorithm [pdf]
J. Graph Theory, 65(3), 185-197, 2010.
- P. Gao, N. C. Wormald.
Rate of convergence of the short cycle distribution in random regular graphs generated by pegging. [pdf]
Elec. J. Combinatorics, Volumn 16(1)(2009), R44, 17 pp.
- P. Gao, N. C. Wormald.
Short cycle distributions in random regular graphs recursively generated by pegging. [pdf]
Random Struct. Algorithms 34(1): 54-86 (2009).
Theses