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Research Group of Prof. Dr. Ira Neitzel

INS Preprints of this group

Go to publications of this group.

2022

  1. A note on source term representation for control-and-state-constrained parabolic control problems with purely time-dependent control. I. Neitzel. Technical Report, Institute for Numerical Simulation, Bonn University, 2022. Submitted. Available as INS Preprint No. 2206. BibTeX PDF
  2. Sparse optimal control of a quasilinear elliptic PDE in measure spaces. F. Hoppe. Submitted. Available as INS Preprint No. 2202, 2022. BibTeX PDF
  3. Purely time-dependent optimal control of quasilinear parabolic PDEs with sparsity enforcing penalization. F. Hoppe and I. Neitzel. ESAIM: COCV, 2022. also available as INS Preprint No. 2201. BibTeX PDF DOI

2020

  1. A-posteriori reduced basis error-estimates for a semi-discrete in space quasilinear parabolic PDE. F. Hoppe and I. Neitzel. Comput. Optim. Appl., 2021. BibTeX PDF DOI
  2. Optimal Control of Quasilinear Parabolic PDEs with State-Constraints. F. Hoppe and I. Neitzel. SIAM J. Control Optim., 60(1):330–354, 2022. BibTeX PDF DOI

2019

  1. Convergence of the SQP method for quasilinear parabolic optimal control problems. F. Hoppe and I. Neitzel. Optim. Eng., 2020. BibTeX PDF DOI

2017

  1. Tangent and normal cones for low-rank matrices. S. Hosseini, D. R. Luke, and A. Uschmajew. INS Preprint No. 1715, oct 2017. BibTeX PDF
  2. A collection of nonsmooth Riemannian optimization problems. P.-A. Absil and S. Hosseini. INS Preprint No. 1713, sep 2017. BibTeX PDF
  3. Second order optimality conditions for optimal control of quasilinear parabolic pdes. L. Bonifacius and I. Neitzel. Mathematical Control and Related Fields, 8(1):1–34, 2018. Preprint version available as INS Preprint No. 1705. BibTeX PDF DOI

2016

  1. Line search algorithms for locally Lipschitz functions on Riemannian manifolds. S. Hosseini, W. Huang, and R. Yousefpour. INS Preprint No. 1626. Revised version, August 2017, nov 2016. BibTeX PDF
  2. A gradient sampling method on algebraic varieties and application to nonsmooth low-rank optimization. S. Hosseini and A. Uschmajew. INS Preprint No. 1624. Extended and revised version, March 2017, oct 2016. BibTeX PDF
  3. A-posteriori error estimation of discrete pod models for pde-constrained optimal control. M. Gubisch, I. Neitzel, and S. Volkwein. In Model reduction and approximation: theory and algorithms, volume of Computational Science and Engineering, pages. SIAM. BibTeX PDF
  4. A priori l2l^2-discretization error estimates for the state in elliptic optimization problems with pointwise inequality state constraints. I. Neitzel and W. Wollner. Numer. Math., 2017. also available as INS Preprint No. 1606. BibTeX PDF DOI
  5. A priori error estimates for state constrained semilinear parabolic optimal control problems. F. Ludovici, I. Neitzel, and W. Wollner. J. Optim. Theory Appl., 178(2):317–348, 2018. also available as INS Preprint No. 1605. BibTeX PDF DOI

2015

  1. Convergence of nonsmooth descent methods via Kurdyka–Łojasiewicz inequality on Riemannian manifolds. S. Hosseini. INS Preprint No. 1523. Revised version, July 2017, nov 2015. BibTeX PDF