Geometry from topological point of view, Algebraic and Differential topology, Transformation groups, Non-compact Lie group action and Toric topology.

Also see i AM scientist and OCAMI-researchers.


I am one of the organizers of Handayama Geometry and Algebra seminar from December 2016. The organizers are Takeshi Ikeda (OUS), Tomoo Matsumura (OUS), Taiki Shibata (OUS) and myself.

I am organizing 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.


April 2017--March 2022 Grant-in-Aid for Young Scientists (B) (JSPS KAKENHI Grant Number 17K14196) --Combinatorial constructions of invariants of manifolds with group actions--

April 2015--March 2017 Grant-in-Aid for Young Scientists (B) (JSPS KAKENHI Grant Number 15K17531) --Theory for complexity one GKM manifolds--

March 2015 OCAMI Association Special Prize 2014.

April 2006--March 2011 Fellowship of Fujukai Foundation

March 2006 Osaka City University Sugaku-kenkyuu-kai Paper Award.

October 2003--March 2006 Japan Society for the Promotion of Science (JSPS) Research Fellowships for Young Scientists (DC1)