Mary Letey

Mary Letey

Hello there! I'm Mary, and I am a PhD student in Applied Mathematics at Harvard advised by Professor Cengiz Pehlevan. I am fortunate to be supported by the Kempner Fellowship.

My main interest is in deep learning theory, and I'm currently working on in-context learning.

Publications + Preprints

Under Submission at ICLR 2026 Pretrain-Test Task Alignment Governs Generalization in In-Context Learning
Mary Letey, Jacob Zavatone-Veth, Yue M. Lu, Cengiz Pehlevan
Under Submission at ICLR 2026 Theory of Scaling Laws for In-Context Regression: Depth, Width, Context and Time
Blake Bordelon, Mary Letey, Cengiz Pehlevan
Proceedings of the National Academy of Sciences, 2025 Asymptotic theory of in-context learning by linear attention
Yue M. Lu, Mary Letey, Jacob Zavatone-Veth, Anindita Maiti, Cengiz Pehlevan
Physics Review D, 2024 Quantum initial conditions for curved inflating universes
Mary Letey*, Zakhar Shumaylov*, Fruzsina Agocs, Will Handley, Michael Hobson, Anthony Lasenby
Master’s Thesis, 2023 Discrete Symmetry in Lorentzian Spaces
Mary Letey, Latham Boyle