1. Richard Steven Varga, 1928–2022

   • Claude Brezinski
   • Philippe G. Ciarlet

   Obituary 13 April 2022 Pages: 1 - 2

2. Extensions of Clenshaw-Curtis-type rules to integrals over a semi-infinite interval

   • Hiroshi Sugiura
   • Takemitsu Hasegawa

   Original Paper 10 August 2021 Pages: 3 - 30

   

3. All-at-once method for variable-order time fractional diffusion equations

   • Hong-Kui Pang
   • Hai-Hua Qin
   • Hai-Wei Sun

   Original Paper 14 August 2021 Pages: 31 - 57

   

4. Structured backward error analysis for a class of block three-by-three saddle point problems

   • Peng Lv
   • Bing Zheng

   Original Paper 06 August 2021 Pages: 59 - 78

   

5. Exact inverse solution techniques for a class of complex valued block two-by-two linear systems

   • Zhao-Zheng Liang
   • Owe Axelsson

   Original Paper 06 August 2021 Pages: 79 - 98

6. Accelerated methods with fastly vanishing subgradients for structured non-smooth minimization

   • Paul-Emile Maingé
   • Florian Labarre

   Original Paper 27 August 2021 Pages: 99 - 136

   

7. Unconditional stability and optimal error estimates of a Crank-Nicolson Legendre-Galerkin method for the two-dimensional second-order wave equation

   • Wenjie Liu
   • Boying Wu

   Original Paper 28 August 2021 Pages: 137 - 158

   

8. A local RBFs-based DQ approximation for Riesz fractional derivatives and its applications

   • Xiaogang Zhu
   • Jimeng Li
   • Yaping Zhang

   Original Paper 01 September 2021 Pages: 159 - 196

   

9. Quantitative analysis of a subgradient-type method for equilibrium problems

   • Nicholas Pischke
   • Ulrich Kohlenbach

   Original Paper Open access 23 August 2021 Pages: 197 - 219

10. Correction to: Quantitative analysis of a subgradient-type method for equilibrium problems

    • Nicholas Pischke
    • Ulrich Kohlenbach

    Correction 04 October 2021 Pages: 221 - 221

11. A note on memory-less SR1 and memory-less BFGS methods for large-scale unconstrained optimization

    • Neculai Andrei

    Original Paper 17 August 2021 Pages: 223 - 240

    

12. Generation of test matrices with specified eigenvalues using floating-point arithmetic

    • Katsuhisa Ozaki
    • Takeshi Ogita

    Original Paper Open access 17 September 2021 Pages: 241 - 262

    

13. Orthogonal polynomials relative to weight functions of Prudnikov type

    • Walter Gautschi
    • Gradimir V. Milovanović

    Original Paper 28 August 2021 Pages: 263 - 270

14. A class of moving Kriging interpolation-based DQ methods to simulate multi-dimensional space Galilei invariant fractional advection-diffusion equation

    • Mostafa Abbaszadeh
    • Mehdi Dehghan

    Original Paper 15 October 2021 Pages: 271 - 299

    

15. Implicit algorithms for eigenvector nonlinearities

    • Elias Jarlebring
    • Parikshit Upadhyaya

    Original Paper Open access 02 September 2021 Pages: 301 - 321

    

16. A study of defect-based error estimates for the Krylov approximation of φ-functions

    • Tobias Jawecki

    Original Paper Open access 08 November 2021 Pages: 323 - 361

    

17. On condition numbers of the total least squares problem with linear equality constraint

    • Qiaohua Liu
    • Zhigang Jia

    Original Paper 01 February 2022 Pages: 363 - 385

18. A feasible proximal bundle algorithm with convexification for nonsmooth, nonconvex semi-infinite programming

    • Li-Ping Pang
    • Qi Wu

    Original Paper 22 September 2021 Pages: 387 - 422

    

19. Measuring geometrical quality of different 3D linear element types

    • Claudio Lobos
    • Cristopher Arenas
    • Nancy Hitschfeld

    Original Paper 01 October 2021 Pages: 423 - 446

    

20. Finite element method for singularly perturbed problems with two parameters on a Bakhvalov-type mesh in 2D

    • Jin Zhang
    • Yanhui Lv

    Original Paper 12 October 2021 Pages: 447 - 475