1. WKB-method for the 1D Schrödinger equation in the semi-classical limit: enhanced phase treatment

   • Anton Arnold
   • Christian Klein
   • Bernhard Ujvari

   OriginalPaper 23 April 2021 Pages: 1 - 22

   

2. An unconventional robust integrator for dynamical low-rank approximation

   • Gianluca Ceruti
   • Christian Lubich

   OriginalPaper Open access 10 May 2021 Pages: 23 - 44

   

3. Convergence of Lobatto-type Runge–Kutta methods for partitioned differential-algebraic systems of index 2

   • Rodrigo T. Sato Martín de Almagro

   OriginalPaper Open access 26 April 2021 Pages: 45 - 67

   

4. Recovering a perturbation of a matrix polynomial from a perturbation of its first companion linearization

   • Andrii Dmytryshyn

   OriginalPaper Open access 20 May 2021 Pages: 69 - 88

   

5. Two new approaches for solving elliptic obstacle problems using discontinuous Galerkin methods

   • Sharat Gaddam
   • Thirupathi Gudi
   • Kamana Porwal

   OriginalPaper 13 April 2021 Pages: 89 - 124

   

6. Hybrid CUR-type decomposition of tensors in the Tucker format

   • Erna Begović Kovač

   OriginalPaper 17 May 2021 Pages: 125 - 138

   

7. Arbitrary high order A-stable and B-convergent numerical methods for ODEs via deferred correction

   • Saint-Cyr E. R. Koyaguerebo-Imé
   • Yves Bourgault

   OriginalPaper 29 April 2021 Pages: 139 - 170

8. Randomized Kaczmarz for tensor linear systems

   • Anna Ma
   • Denali Molitor

   OriginalPaper 17 May 2021 Pages: 171 - 194

   

9. Some algorithms for maximum volume and cross approximation of symmetric semidefinite matrices

   • Stefano Massei

   OriginalPaper Open access 22 April 2021 Pages: 195 - 220

   

10. Low-rank multi-parametric covariance identification

    • Antoni Musolas
    • Estelle Massart
    • Youssef Marzouk

    OriginalPaper 05 May 2021 Pages: 221 - 249

    

11. Fully discrete a posteriori error estimates for parabolic integro-differential equations using the two-step backward differentiation formula

    • G. Murali Mohan Reddy

    OriginalPaper 14 April 2021 Pages: 251 - 277

    

12. Sampling based approximation of linear functionals in reproducing kernel Hilbert spaces

    • Gabriele Santin
    • Toni Karvonen
    • Bernard Haasdonk

    OriginalPaper 13 April 2021 Pages: 279 - 310

    

13. A Riemannian under-determined BFGS method for least squares inverse eigenvalue problems

    • Zhi Zhao
    • Xiao-Qing Jin
    • Teng-Teng Yao

    OriginalPaper 28 April 2021 Pages: 311 - 337