1. Carl-Erik Fröberg on his 75th birthday June 23, 1993

   • Axel Ruhe

   Announcement Pages: i - ii

2. Solution of augmented linear systems using orthogonal factorizations

   • Å. Björck
   • C. C. Paige

   OriginalPaper Pages: 1 - 24

3. A transformation for the analysis of DIMSIMs

   • J. C. Butcher

   OriginalPaper Pages: 25 - 32

4. Quadratic spline collocation methods for elliptic partial differential equations

   • Christina C. Christara

   OriginalPaper Pages: 33 - 61

5. On integrating vertex singularities using extrapolation

   • Terje O. Espelid

   OriginalPaper Pages: 62 - 79

6. The non-existence of symplectic multi-derivative Runge-Kutta methods

   • E. Hairer
   • A. Murua
   • J. M. Sanz-Serna

   OriginalPaper Pages: 80 - 87

7. Runge-Kutta stability on a Floquet problem

   • Desmond J. Higham

   OriginalPaper Pages: 88 - 98

8. Fast transforms for tridiagonal linear equations

   • Thomas Huckle

   OriginalPaper Pages: 99 - 112

9. Two counterexamples related to the Kreiss matrix theorem

   • J. F. B. M. Kraaijevanger

   OriginalPaper Pages: 113 - 119

10. Some nodes matrices appearing in the numerical analysis for singular integral equations

    • Giuseppe Mastroianni
    • Siegfried Prössdorf

    OriginalPaper Pages: 120 - 128

11. Semi-analytic time-marching algorithms for semi-linear parabolic equations

    • Vladimir Maz'ya
    • Valdimir Karlin

    OriginalPaper Pages: 129 - 147

12. Proof versus formalization

    • Peter Naur

    OriginalPaper Pages: 148 - 164

13. The rational Krylov algorithm for nonsymmetric eigenvalue problems. III: Complex shifts for real matrices

    • Axel Ruhe

    OriginalPaper Pages: 165 - 176