離散数理モデリングセミナー

過去の記録 ~12/02次回の予定今後の予定 12/03~

担当者 時弘哲治, ウィロックス ラルフ

2022年11月30日(水)

15:00-16:30   数理科学研究科棟(駒場) 128号室
Mikhail Bershtein 氏 (Skoltech・HSE / IPMU)
Folding transformations for q-Painleve equations (English)
[ 講演概要 ]
Folding transformation of the Painleve equations is an algebraic (of degree greater than 1) transformation between solutions of different equations. In 2005 Tsuda, Okamoto and Sakai classified folding transformations of differential Painleve equations. These transformations are in correspondence with automorphisms of affine Dynkin diagrams. We give a complete classification of folding transformations of the q-difference Painleve equations, these transformations are in correspondence with certain subdiagrams of the affine Dynkin diagrams (possibly with automorphism). The method is based on Sakai's approach to Painleve equations through rational surfaces.
Based on joint work with A. Shchechkin [arXiv:2110.15320]