Jacob Richey

Postdoctoral research fellow at the Renyi Institute

Email: jfrichey(at)renyi.hu



My research is in combinatorial probability. Recently, I have been thinking about two interacting particle systems, the stochastic sandpile and the parking process, and combinatorics for shifts of finite type.

Publications and preprints

  • When random intersection graphs lose geometry. With Sebastien Bubeck and Miklos Racz. (In preparation)
  • Random walks on regular trees cannot be slowed down, with Omer Angel, Jacob Richey, Amir Yehudayoff, Yinon Spinka.
  • Diffusion-limited annihilating-coalescing systems, with Sungwon Ahn, Matt Junge, Hanbaek Lyu, Lily Reeves, Jacob Richey, David Sivakoff.
  • Active phase for the Stochastic Sandpile on Z.
  • Active phase for activated random walk on Z. CMP, 2020.
  • Intersections of random sets. Journal of Applied Probability, 2020.
  • Rumor source detection with multiple observations under adaptive diffusion protocols. IEEE, 2020.
  • Activated random walk on a cycle. AIHP, 2019.
  • A smooth transition from Wishart to GOE. JOTP, 2018.
  • Selected talks

    Finding the source of a random diffusion

    Recent results on the phase transition for ARW on Z

    Random random

    Combinatorial processes

    Entropy and letter densities for pattern avoiding processes

    Collisions among random walks

    Sumsets in [0,1]

    Undergraduate honors thesis

    Bridge articles

    Bridge conventions and bidding. An introduction to the basics of bridge I wrote to teach friends and family about the game. Contains an explicit bidding tree for SAYC.

    Bridge articles. Some short, fun articles I wrote to teach advanced bridge situations, e.g. squeezes and coups.