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Alex Townsend
Goenka Family Assistant Professor
Malott Hall, Room 589
ajt253@cornell.edu
Educational Background
- DPhil (2014) University of Oxford
Website(s)
Departments/Programs
- Mathematics
Graduate Fields
- Mathematics
Research
Numerical analysis, scientific computing, and deep learning
I am interested in the study and development of numerical algorithms in applied mathematics. I mainly work in the following three areas: (1) Novel spectral methods for the solution of differential equations, (2) Low-rank techniques, and (3) Theoretical aspects of deep learning.
Courses
Fall 2021
- MATH 2210 : Linear Algebra
- MATH 4900 : Supervised Research
- MATH 4901 : Supervised Reading
- MATH 7290 : Seminar on Scientific Computing and Numerics
Publications
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Dense networks that do not synchronize and sparse ones that do (with M. Stillman and S. H. Strogatz), Chaos, 30 (2020), 083142.
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Fast algorithms using orthogonal polynomials (with S. Olver and R. M. Slevinsky), Acta Numerica, 29 (2020), pp. 573-699.
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Stable extrapolation of analytic functions (with L. Demanet), Foundations of Computational Mathematics, 19 (2019), pp. 297-331.
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Bounds on the singular values of matrices with displacement structure (with B. Beckermann), SIAM Review, 61 (2019), pp. 319-344.
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Why are big data matrices approximately low rank? (with M. Udell), SIAM Journal on Mathematics of Data Science, 1 (2019), pp. 144-160.