most citedOn linear differential equations with infinitely many derivatives

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math.OC2016

Convergence of dual ascent in non-convex/non-differentiable optimization

Fredrik Andersson, Marcus Carlsson, Carl Olsson

We revisit the classical dual ascent algorithm for minimization of convex functionals in the presence of linear constraints, and give convergence results which apply even for non-c…

math.FA2016

Convex envelopes for fixed rank approximation

Fredrik Andersson, Marcus Carlsson, Carl Olsson

A convex envelope for the problem of finding the best approximation to a given matrix with a prescribed rank is constructed. This convex envelope allows the usage of traditional op…