## Jacob Richey

Postdoctoral research fellow at University of British Columbia

**Email:**
jfrichey(at)math.ubc.ca

**Office:**
MATX 1220

CV
### Research

My research is in combinatorial probability. Recently, I have been thinking about two interacting particle systems (ARW and the parking process), and a recovery problem for simple random walk.

### Publications and preprints

A smooth transition from Wishart to GOE. JOTP, 2018.
Activated random walk on a cycle. AIHP, 2019.
Active phase for activated random walk on Z. Submitted to CMP, 2020.
Intersections of random sets. Submitted to JOAP, 2020.
Rumor source detection with multiple observations under adaptive diffusion protocols. To appear, IEEE 2020.
When random intersection graphs lose geometry, with Sebastien Bubeck and Miklos Racz. In preparation.

### Recent talks

Finding the source of a random diffusion
Recent results on the phase transition for ARW on Z

### Other math

Combinatorial processes
Undergraduate honors thesis

Collisions among random walks

Sumsets in [0,1]

### Bridge articles

Bridge conventions and bidding. An introduction to the basics of bridge I have used to teach friends and family about the game. Contains an explicit bidding tree for SAYC.
Bridge articles. Some short articles I wrote to teach advanced bridge situations, e.g. squeezes and coups.