Homepage of Pieter Roffelsen
Most of my papers can be found on .

Preprints

Papers

  1. On integrals of non-autonomous dynamical systems in finite characteristic, with N. Joshi
    Constructive Approximations, in press (2026), 36 pages
  2. Segre surfaces and geometry of the Painlevé equations, with N. Joshi and M. Mazzocco
    Communications in Mathematical Physics, 407 (2026), 77 pages
  3. Extensions and generalizations of an analytic method for finding stationary solutions to GNLS
    with O. Adiv, N.G.R. Broderick, C.M. de Sterke and Y.L. Qiang, Physica D, 496 (2026), 17 pages
  4. Arithmetic dynamics of a discrete Painlevé equation, with N. Joshi.
    Journal of Physics A, 59 (2026), 14 pages
  5. On real and imaginary roots of generalised Okamoto polynomials, with A. Stokes.
    J. London Math. Soc., 112 (2025), 69 pages
  6. On non-integrability and singularities of dispersion-generalized NLSE, with P. Lavilles, J.J. Mitchell-Bolton, N.G.R. Broderick, Y.L. Qiang and C.M. de Sterke.
    Journal of Nonlinear Waves, 1 (2025), 18 pages
  7. On the Crystal Limit of the q-Difference Sixth Painlevé Equation, with N. Joshi.
    Journal of Nonlinear Science, 35 (2025), 30 pages
  8. On q-Painlevé VI and the geometry of Segre surfaces
    Nonlinearity, 37 (2024), 116 pages
  9. On a class of elliptic orthogonal polynomials and their integrability, with H. Desiraju and T.L. Latimer.
    Constructive Approximations, 59 (2024), 44 pages
  10. On the Monodromy Manifold of q-Painlevé VI and Its Riemann–Hilbert Problem, with N. Joshi.
    Communications in Mathematical Physics, 404 (2023), 53 pages
  11. On symmetric solutions of the fourth q-Painlevé equation, with N. Joshi.
    Journal of Physics A, 56 (2023), 30 pages
  12. Roots of generalised Hermite polynomials when both parameters are large, with D. Masoero.
    Nonlinearity, 34 (2021), 70 pages
  13. On the Riemann-Hilbert Problem for a q-difference Painlevé Equation, with N. Joshi.
    Communications in Mathematical Physics, 384 (2021), 37 pages
  14. Poles of Painlevé IV Rationals and their Distribution, with D. Masoero.
    SIGMA, 14 (2018), 49 pages
  15. Analytic solutions of q-P(A1) near its critical points, with N. Joshi.
    Nonlinearity 29 (2016), 48 pages
  16. On the Number of Real Roots of the Yablonskii-Vorob’ev Polynomials.
    SIGMA, 8 (2012), 9 pages
  17. Irrationality of the Roots of the Yablonskii-Vorob'ev Polynomials and Relations between Them.
    SIGMA, 6 (2010), 11 pages