3 papers
math.OC2018
Optimal control of differential-algebraic equations from an ordinary differential equation perspective
Achim Ilchmann, Leslie Leben, Jonas Witschel +1
We study the Optimal Control Problem (OCP) for regular linear differential-algebraic systems (DAEs). To this end, we introduce the input index, which allows, on the one hand, to ch…
math.FA2018
Finite Rank Perturbations of Linear Relations and Matrix Pencils
Leslie Leben, Francisco Martínez-Pería, Friedrich Philipp +2
We elaborate on the deviation of the Jordan structures of two linear relations that are finite-dimensional perturbations of each other. We compare their number of Jordan chains of…
math.FA2017
Spectrum of -frame operators
Juan Ignacio Giribet, Matthias Langer, Leslie Leben +3
A -frame is a frame for a Krein space which is compatible with the indefinite inner product in the sense that it induces an…