I organized Toric Topology 2023 with Prof. Mikiya Masuda (OCAMI) and Takashi Sato (OCAMI) from 21st--22nd February 2023. The conference was held at Osaka Metropolitan University by hybrid.
I organized Toric Topology 2022 in Osaka with Prof. Mikiya Masuda (OCAMI) from 23rd--25th March 2022. The conference was held in zoom and supported by OCAMI.
I organized Toric Topology 2021 in Osaka with Prof. Mikiya Masuda (OCAMI) from March 24th--26th, 2021. The conference was held in zoom and supported by OCAMI and GT center.
I co-organized kpa70+ Transformation group theory --The path we have walked along, and the way to progress-- On the celebration for the retirement and the 70th birthday of Professor Krzystof M. Pawalowski in Tokyo University of Science from February 17th--19th, 2021 in zoom. The main organizer was Takao Sato (Tokyo U of Science).
I co-organized ``Workshop for the retirement of Prof. Masaharu Morimoto'' which held in Osaka University from February 15th--16th, 2020. The main organizer was Takao Sato (Tokyo U of Science).
I organized ``Diffelogy, Topology and Combinatorial structure'' which held in Kinosaji Kenkou Fukushi center with Daisuke Kishimoto (Kyoto U), from December 8th--10th, 2019.
I organized Toric Topology 2019 in Okayama with Prof. Mikiya Masuda (Osaka City U) and Tomoo Matsumura (OUS), from November 18th--21st, 2019. The conference Workshop for Young researchers was also held on 22nd November 2019. Slides are here and here
I organized RIMS conference Geometry, Algebra and Combinatorics in Transformation group theory from June 4th--8th, 2018.
I organized the 43rd Symposium on Transformation Groups from November 17th--19th, 2016 with Yasuzo Nishimura (Fukui U).
I organized Mini-workshop on Toric Topology in Okayama (see program) with Tomoo Matsumura (Okayama U of Science) at May 21st 2016.
I co-organized Toric topology 2016 in Kagoshima from April 19th--22nd, 2016 The organizers were Hiroaki Ishida (Kagoshima U), Mikiya Masuda (Osaka City U), and myself.
I co-organized the 42nd Symposium on Transformation Groups in 2015 from November 26th--28th, 2015. The organizers were Prof. Yasuhiro Hara (Osaka U) and myself.
I co-organized Toric Topology 2015 in Osaka from June 16th--19th, 2015. The organizers were Mikiya Masuda (Osaka City U), Hiroaki Ishida (RIMS) and myself.
I organized Toric Topology, Algebraic Topology and Combinatorics (see program) at Aug. 30th, 2014.
I co-organized Toric Topology 2014 in Osaka from Jan. 21st--24th, 2014. The organizers were Mikiya Masuda (Osaka City U), Hiroaki Ishida (RIMS) and myself.
I was one of local organizers of MSJ-SI 2012 Schubert calculus from July 17th to 27th 2012. The (chair) organizer was Hiroshi Naruse (Okayama U).
I co-organized Toric Topology 2011 in Osaka from November 28th to 30th 2011. The organizers were Mikiya Masuda (OCU), Hiroaki Ishida (OCAMI), Yukiko Fukukawa (OCU D1) and myself.
I co-organized KAIST Toric Topology Workshop 2010 from February 22nd to 26th 2010. The organizers were DongYoup Suh (KAIST), Seonjeong Park (Ph.D student in KAIST) and myself.
I co-organized Osaka City University Summer School on Symplectic Geometry and Toric Topology from July 17th to 27th 2007. The organizers were Mikiya Masuda (OCU), Takahiko Yoshida (U of Tokyo) and myself.
I co-organized The Theory of Transformation Groups and its Applications from May 28th to June 1st 2007. The organizers were Ikumitsu Nagasaki (Kyoto Prefectural U of Medicine) and myself.
I co-organized the OCU Graduate Students Colloquium from Apr. 2005 to Mar. 2006. The organizers were Toshihiro Nogi (OCU D3), Shigehisa Ishimura (OCU D2) and myself.
I co-organized the 2nd Kinosaki shinjin seminar in Feb. 2005. The organizers were Shizuo Kaji (Kyoto U D1) and so on.
I was a chief organizer of the 39th Topology Fresher's seminar in Aug. 2002. The organaizers were Yoshinori Ito (Yamagata U M2) and myself.