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math.NA2024
Randomly Pivoted Partial Cholesky: Random How?
Stefan Steinerberger
We consider the problem of finding good low rank approximations of symmetric, positive-definite . Chen-Epperly-Tropp-Webber showed, among many other…
math.NA2022★ 1 cited
Approximate Solutions of Linear Systems at a Universal Rate
Stefan Steinerberger
Let be invertible, unknown and given. We are interested in approximate solutions: vectors such th…