Dear all,

I would like to forward the following announcement 

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  以下の要領でFMSP-IPMU特別セミナーを開催しますのでご案内致します。
                                     世話人:　河野俊丈、斎藤恭司

  日時：　2015年　4月20日　10:00-12:00、13:30-15:00、15:30-17:30
  場所：　IPMU　4階、　バルコニー　A
  講師：　千葉逸人　（九州大学）
  表題：　パンルヴェ方程式とウェィト系

  アブストラクトは以下の英語表示をご覧下さい。

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  We shall have a FMSP-IPMU special seminar as follows.

  Speaker:   Hayato Chiba   (Kyushu university)
  　Title:   Painleve equations and weight system
  　 Date:   Mon, April 20, 2015, 10:00-12:00, 13:30-15:00, 15:30-17:30
    Place:   Balcony A,  IPMU

  Abstract:
  A weight (a tuple of integers) is one of the invariants of the
  Painlev'{e} equation determined by the Newton diagram of the equation.
  In this talk, several topics about the Painlev'{e} equations and
  weights will be introduced.

  In the first lecture, a brief review of the Painlev'{e} equations
  and the analysis of the Painlev'{e} equations by means of the
  weighted projective spaces associated with the weights will be given.

  In the second lecture, it will be shown that the weights for the
  Painlev'{e} equations are closely related to Saito's theory of weight
  systems.

  In the third lecture, it will be shown that the hierarchy of the
  Painlev'{e} equations is obtained from a certain Lie-Poisson
  structure. The weights are recovered through the Darboux
  coordinates of the Poisson structure.


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Todor Eliseev Milanov
Associate Professor 
Kavli IPMU,  Japan

todor.milanov at ipmu.jp