题目：On planar web geometry
报告人：Alain Henaut（法国波尔多第一大学）
时间：07.11.1(周四)，15：00-16：00
地点：中山北路理科大楼A1510

摘要：Web geometry deals with families of foliations in general position. In
the talk we restrict our attention to the planar case with complex
analytic foliations of curves. Basic results are presented and some
new ones are also given through the implicit viewpoint, that is
nonlinear differential equation of the first order in the plane. We
emphasize all along the talk on introductory examples and methods :
algebraic webs, polylogarithmic webs, meromorphic connections,
algebraic differential equations, etc. Moreover open perspectives are
also given on a subject which illustrates the rich interplay between
differential geometry and algebraic geometry.