Research theme for competitive and other funds (3):
2017 - 2023 多項式の力学系を基点とする超越整関数および多項式半群の複素力学系の研究
2009 - 2012 連分数展開が織り成す多彩なジーゲル円板の境界の解明
2008 - 2012 Research on potential problems from various aspects
Papers (13):
Koh KATAGATA. Entire functions of slow growth whose Julia set contains any infinite collection of quasiconformal copies of polynomial Julia sets. Journal of Difference Equations and Applications. 2022. 28. 5. 605-637
Koh KATAGATA. Transcendental entire functions whose Julia sets contain any infinite collection of quasiconformal copies of quadratic Julia sets. Discrete and Continuous Dynamical Systems - Series A. 2019. 39. 9. 5319-5337
Koh Katagata. Entire functions whose Julia sets include any finitely many copies of quadratic Julia sets. Nonlinearity. 2017. 30. 6. 2360-2380
Koh KATAGATA. Alternate locations of equilibrium points and poles in complex rational differential equations. International Mathematical Forum. 2014. 9. 35. 1725-1739