Morgan Shirley

I am a postdoctoral researcher working in theoretical computer science at the University of Victoria, hosted by Sajin Koroth and Bruce Kapron. I received my PhD from the University of Toronto under the supervision of Toni Pitassi. My previous education includes a Masters degree at Oregon State University, where I was advised by Mike Rosulek.

From a young age I have been interested in computing. More recently, I have focused my attentions on computational complexity. I am most excited about questions related to communication complexity, proof complexity, and connections between theoretical computer science and additive combinatorics.

Papers

A Lower Bound on the Trace Norm of Boolean Matrices and its Applications
Tsun-Ming Cheung, Hamed Hatami, Kaave Hosseini, Aleksandar Nikolov, Toniann Pitassi, and Morgan Shirley
ITCS 2025. (article) (video by Ben) (preprint)
An Improved Protocol for ExactlyN With More Than 3 Players
Lianna Hambardzumyan, Toniann Pitassi, Suhail Sherif, Morgan Shirley, and Adi Shraibman
Separation of the Factorization Norm and Randomized Communication Complexity
Tsun-Ming Cheung, Hamed Hatami, Kaave Hosseini, and Morgan Shirley
CCC 2023. (article) (preprint)
The Strength of Equality Oracles in Communication
Toniann Pitassi, Morgan Shirley, and Adi Shraibman
ITCS 2023. (article) (video) (slides) (preprint)
Nondeterministic and Randomized Boolean Hierarchies in Communication Complexity
Toniann Pitassi, Morgan Shirley, and Thomas Watson
ICALP 2020. (article) (video) (slides) (preprint)
Journal version in Computational Complexity. (article)
On the Structure of Unconditional UC Hybrid Protocols
Mike Rosulek and Morgan Shirley
TCC 2018. (article) (slides) (preprint)
Time-Dependent Shortest Paths in Bounded Treewidth Graphs
Glencora Borradaile and Morgan Shirley
Manuscript. (preprint)

Other Writings

The General Adversary Bound: A Survey
Lily Li and Morgan Shirley
Manuscript. (article) (preprint)

Miscellaneous

I played bass guitar for the band ITSAWAR. You can check out the EP we recorded here.