Welcome to my homepage!

I am a Gibbs Assistant Professor in the Department of Mathematics at Yale University.

I received my Ph.D. in Mathematics from University of California, Davis under the supervision of Misha Kapovich. Prior to that, I received my the Master of Mathematics degree in 2015 and the Bachelor of Mathematics (Hons.) degree in 2013 from Indian Statistical Institute, Bangalore, India.

Here is my cv.

### Research

I am interested in discrete subgroups of Lie groups, geometric group theory, and non-positively curved geometry.

Preprints

Klein-Maskit combination theorem for Anosov subgroups: Amalgams (with Michael Kapovich). Submitted. [arXiv:2301.02354]

On Borel Anosov subgroups of SL(d, R). Submitted. [arXiv:2208.02109]

Complex-hyperbolic Kleinian groups of large critical exponents (with Beibei Liu). Submitted. [arXiv:2205.05127]

Klein-Maskit combination theorem for Anosov subgroups: Free products (with Michael Kapovich). Submitted. [arxiv:2205:03919] [Updated version]

Publications

A note on complex-hyperbolic Kleinian groups (with Michael Kapovich), Arnold Mathematical Journal (2020) Volume 6, pp 397-406. [Published version] [arXiv:2001.04012]

Patterson-Sullivan theory for Anosov subgroups (with Michael Kapovich), Transactions of the American Mathematical Society (2022) Volume 375, Number 12, pp 8687-8737. Â [Published version] [arXiv:1904.10196]

Ping-pong in Hadamard manifolds (with Michael Kapovich, Beibei Liu), Munster Journal of Mathematics (2019) Volume 12, Issue 2, pp 453-471. [Published version] [arXiv:1806.07020]

A combination theorem for Anosov subgroups (with Michael Kapovich, Bernhard Leeb), Mathematische Zeitschrift (2019) Volume 293, Issue 1-2, pp 551-578. [Published version] [arXiv:1805.07374]

Spherical metrics with conical singularities on 2-spheres, Geometriae Dedicata (2018) Volume 196, Issue 1, pp 53-61. [Published version] [arXiv:1704.04823]

Thesis

Discrete isometry groups of symmetric spaces of noncompact type, Ph.D. thesis, UC Davis (2020)

### Teaching

Yale

Math 225: Linear Algebra, Spring 2023

Math 719: Introduction to Anosov Subgroups, Fall 2022

Math 544A: Algebraic Topology, Fall 2020, Fall 2022

Math 240: Advanced Linear Algebra, Spring 2022

Math 120B: Calculus of Functions of Several Variables, Spring 2020, Fall 2021

UC Davis

Math 108: Introduction to Abstract Mathematics, Summer I, 2018

Math 21B: Integral Calculus, Summer I, 2017

Math 16B: Short Calculus, Summer II, 2016

Mentoring

Group mentor in SUMRY program (Summer Undergraduate Math Research at Yale), Summer 2022

### Contact

LOM 207, 12 Hillhouse, New Haven, CT 06511

Department of Mathematics

Yale University

Email: subhadip DOT dey AT yale DOT edu