We are organizing the conference:
“Conference on Several Complex Variables — L2 Estimates and Extensions —”
This conference will spotlight recent advances in several complex variables, with particular emphasis on the L2 method and the optimal L2 extension theorem.
By bringing together researchers from Japan and abroad, we aim to foster lively discussion and catalyze new collaborative projects.
DD/MM/YYYY
13/09/2025: Paper [33] has been accepted by Journal of Functional Analysis.
13/07/2025: Paper [32] has been accepted by Algebraic Geometry.
07/07/2025: Paper [24] has been accepted by Journal of the European Mathematical Society.
29/06/2025: Paper [40] has been uploaded to arXiv.
30/03/2025: Paper [29] has been published.
13/03/2025: Article [D10] has been uploaded.
04/02/2025: Paper [39] has been uploaded to arXiv.
04/02/2025: Paper [38] has been uploaded to arXiv.
16/01/2025: Paper [36] has been accepted by Complex Manifolds.
09/01/2024: The final version of Paper [30] has been uploaded to arXiv.
24/09/2024: Paper [37] has been uploaded to arXiv.
11/09/2024: Paper [36] has been uploaded to arXiv.
17/07/2024: Paper [35] has been uploaded to arXiv.
DD/MM/YYYY
12/07--19/07: I will give a talk at 2025 Summer Research Institute in Algebraic Geometry @Colorado State University
16/09--19/09: I will give a talk at the autumn general sectional meeting of the Mathematical Society of Japan@Nagoya
30/08--08/09: I will give a talk in a short course of Workshop on Algebraic Geometry and Complex Geometry@Wuhan
04/10: I will attend the conference; ホッジ理論と代数幾何学@Tokyou
November: I will give a talk@Taiwan
December: I will give a talk@Kanazawa
My name is Shin-ichi Matsumura (松村 慎一 in native script).
I am a mathematician affiliated with the Mathematical Institute of Tohoku University in Japan.
My research interests lie in complex geometry, several complex variables, and algebraic geometry.
I am studying algebraic varieties (more generally Kaehler manifolds) and global complex analysis on them, using transcendental methods arising from the theory of several complex variables and differential geometry, motivated by higher-dimensional algebraic geometry (particularly, birational geometry). My recent interest lies in the following topics:
-Problems of extending holomorphic sections of pluri-canonical bundles from subvarieties to the ambient space, with applications in the minimal model program.
-Construction of an analytic framework for Hodge theory and the singularities (especially, the log canonical singularities) in algebraic geometry.
-Structure theorems for Kaehler spaces under certain semi-positively curved conditions, like semi-positive (bi)sectional curvature, tangent bundles, and anti-canonical divisors.
Comments on my research and papers are always welcome. Please feel free to e-mail me.
-- Papers (the list of my papers, including preprints)
-- Tips
-- I am serving as an Associate Editor of the Tohoku Mathematical Journal.
The journal was first published in 1911 and is the earliest Japanese scientific journal devoted to mathematics in Western languages.It is also well known for having published landmark papers such as Claude Chevalley’s “Sur certains groupes simples” and Alexander Grothendieck’s “Sur quelques points d’algèbre homologique.” I warmly encourage you to consider submitting your work to the journal.