皆様、

多くのご出席をお待ちしております。

第３回九州合同セミナー
日時：2014年1月11日（土）16:00 - 17:00
場所：佐賀大学理工学部
講師：斎藤 毅 氏（東大・数理）
題目：Wild ramification and the characteristic cycle of an l-adic sheaf
要旨：Since its introduction by Grothendieck in 1960's, l-adic sheaves on a variety of positive characteristic has been a basic tool in arithmetic geometry. 
Although the Grothendieck-Ogg-Shafarevich formula computing the Euler number using the ramification was established in 60'sfor a curve, its generalization to higher dimension 
was left remained for decades. I will report on recent progresses on the definition of the characteristic cycle of an l-adic sheaf and its application
to the Euler number and vanishing cycles, guided by an analogy between the irregularity of a D-module and wild ramification of an l-adic sheaf.

ポスター　：http://www2.math.kyushu-u.ac.jp/~weng/SaitoKJS.pdf

組織委員：
市川尚志（佐賀大学）：ichikawa at ms.saga-u.ac.jp
翁林（九州大学）：weng at math.kyushu-u.ac.jp
加藤文元（熊本大学）：kato at sci.kumamoto-u.ac.jp
小櫃邦夫（鹿児島大学）：obitsu at sci.kagoshima-u.ac.jp

敬具、小櫃

　皆様、

多くのご出席をお待ちしております。

第３回九州合同セミナー
日時：2014年1月11日（土）16:00 - 17:00
場所：佐賀大学理工学部
講師：斎藤 毅 氏（東大・数理）
題目：Wild ramification and the characteristic cycle of an l-adic sheaf
要旨：Since its introduction by Grothendieck in 1960's, l-adic sheaves on a variety of positive characteristic has been a basic tool in arithmetic geometry. 
Although the Grothendieck-Ogg-Shafarevich formula computing the Euler number using the ramification was established in 60'sfor a curve, its generalization to higher dimension 
was left remained for decades. I will report on recent progresses on the definition of the characteristic cycle of an l-adic sheaf and its application
to the Euler number and vanishing cycles, guided by an analogy between the irregularity of a D-module and wild ramification of an l-adic sheaf.

ポスター　：http://www2.math.kyushu-u.ac.jp/~weng/SaitoKJS.pdf

組織委員：
市川尚志（佐賀大学）：ichikawa at ms.saga-u.ac.jp
翁林（九州大学）：weng at math.kyushu-u.ac.jp
加藤文元（熊本大学）：kato at sci.kumamoto-u.ac.jp
小櫃邦夫（鹿児島大学）：obitsu at sci.kagoshima-u.ac.jp

敬具、小櫃