47 citations · 124 across the 33 of their papers we have counts for
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math.FA2014★ 2 cited
Variational principles for self-adjoint operator functions arising from second-order systems
Birgit Jacob, Matthias Langer, Carsten Trunk
Variational principles are proved for self-adjoint operator functions arising from variational evolution equations of the form \[ \langle\ddot{z}(t),y \rangle + \mathfrak{d}[\dot{z…
math.FA2014
The effect of finite rank perturbations on Jordan chains of linear operators
Jussi Behrndt, Leslie Leben, Francisco Martínez Pería +1
A general result on the structure and dimension of the root subspaces of a matrix or a linear operator under finite rank perturbations is proved: The increase of dimension from the…