2 papers
math.NA2026
Hybrid hierarchical matrices with adaptive mixed precision storage
Ritesh Khan, Erin Carson
Hierarchical matrices are data-sparse approximations of dense matrices that are widely used for fast matrix computations. Hierarchical matrices are built using a tree data structur…
math.NA2024
New Algebraic Fast Algorithms for -body Problems in Two and Three Dimensions
Ritesh Khan, Sivaram Ambikasaran
We present two new algebraic multilevel hierarchical matrix algorithms to perform fast matrix-vector product (MVP) for -body problems in dimensions, namely efficient $\mathc…