$PGL(3)$-invariant systems from
spectral factorisation and
the Lattice Schwarzian Boussinesq system
报告专家:Frank Nijhoff 教授 (利兹大学)
报告时间:11月19日(周三)10:00-11:00
报告地点:国家天元数学西南中心401
报告摘要:
The talk deals with two main connected issues:
1) how the factorisation problems for differential and difference spectral problems lead naturally to integrable partial differential and difference equations;
2) how differential and difference invariants are obtained from the same spectrum problems, and the corresponding $PGL(3)$ invariant nonlinear equations.
This is work in collaboration with Linyu Peng, Cheng Zhang and Da-jun Zhang.
专家简介:
Frank W. Nijhoff,英国利兹大学数学学院教授、博士生导师、洪堡学者、英国物理学会会士(Fellow of the Institute of Physics),曾担任Leeds大学应用数学系主任。Nijhoff教授长期从事离散可积系统的研究,是国际公认的离散可积系统领域的领军学者,在离散可积系统的直接线性化理论、多维相容理论、Lagrangian多形式理论等方面做出了开创性贡献。Nijhoff教授主持英国EPSRC基金多项,2012年当选为英国皇家学会Leverhulme Trust Senior Research Fellow,长期担任离散可积系统国际系列会议SIDE (Symmetries and Integrability of Difference Equations)指导委员会主席,同时他还是可积系统领域多个重要期刊主编或编委。众多研究成果发表在《Communications in Mathematical Physics》、《International Mathematics Research Notices》、《Proceedings of the Royal Society》、《Nonlinearity》等国际一流数学物理期刊上。
邀请人:李世豪

