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math.NA2019★ 1 cited
Graph-Induced Rank Structures and their Representations
Shivkumar Chandrasekaran, Ethan N. Epperly, Nithin Govindarajan
A new framework is proposed to study rank-structured matrices arising from discretizations of 2D and 3D elliptic operators. In particular, we introduce the notion of a graph-induce…
math.NA2018
Fast Algorithms for Displacement and Low-Rank Structured Matrices
Shivkumar Chandrasekaran, Nithin Govindarajan, Abhejit Rajagopal
This tutorial provides an introduction to the development of fast matrix algorithms based on the notions of displacement and various low-rank structures.
math.NA2010★ 3 cited
A construction of linear bounded interpolatory operators on the torus
S. Chandrasekaran, H. N. Mhaskar
Let be an integer. Given samples of a smooth function of variables, --periodic in each variable, we consider the problem of constructing a --variate trigono…