Research field (2)：
Applied mathematics and statistics
, Basic mathematics
Research keywords (5)：
Descriptive Set Theory
, Axiomatic Set Theory
, 公理的集合論
, 記述集合論
, 集合論
Research theme for competitive and other funds (8)：
2020 - 2024 Mathematics and Philosophy of Set Theory of the Continuum
2007 - 2009 Construction of higher dimensional Erdos-type spaces with selectors and study of topological structure of hyperspaces
2007 - 2009 Study of the structure of the Markov-Zariski topology of a group and convergence properties of compact-like topological groups
2003 - 2005 Research on "Classification of filters and subsets of reals with respect to selector, and convergence properties of hyperspacea"
2003 - 2005 Algebraic structure of compact-like topological groups and convergence properties
2002 - 2004 調和解析の記述集合論
2000 - 2001 A study of continuous selections for filter spaces
1994 - 1994 三角級数論の記述集合論的研究
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Papers (8)：
Toshimichi Usuba, Hiroshi Fujita. Roles of Large Cardinals in Set Theory. Journal of the Japan Association for Philosophy of Science. 2011. 39. 2. 83-92
