Pieter Roffelsen

activity

20152026

q

P (A_{1})

near its critical points

9 citations · 12 across the 10 of their papers we have counts for

collaborators

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3 papers · 1 filter

math-ph2026

A Tau function for $q$ -Painlevé VI as a Fredholm determinant

Harini Desiraju, Pieter Roffelsen

We give an analytic construction of a tau function for the $q$ -difference sixth Painlevé equation ( $q$ PVI) as a Fredholm determinant through the general Riemann-Hilbert problem ass…

nlin.SI2026

On difference-differential Lax pairs and integrals of Painlevé equations in finite characteristic

Nalini Joshi, Tomas Lasic Latimer, Pieter Roffelsen

We collect rank two difference-differential Lax pairs for classical Painlevé equations in the literature and put each in $2 \times 2$ matrix form with the coefficient matrix of the…

nlin.SI2026

On integrals of non-autonomous dynamical systems in finite characteristic

Nalini Joshi, Pieter Roffelsen

We use a difference Lax form to construct simultaneous integrals of motion of the fourth Painlevé equation and the difference second Painlevé equation over fields with finite chara…

A Tau function for q-Painlevé VI as a Fredholm determinant

On difference-differential Lax pairs and integrals of Painlevé equations in finite characteristic

On integrals of non-autonomous dynamical systems in finite characteristic

A Tau function for $q$ -Painlevé VI as a Fredholm determinant