KATAGATA Koh

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Tenshochi（Kitakami City 20090419）
   Ichinoseki National College of Technology

   Takanashi, Hagisho, Ichinoseki, Iwate JAPAN 021-8511

   Tel & Fax ： +81-191-24-4780

   Mail ： katagata (at sign) ichinoseki.ac.jp


Specialized Field ： Complex Analysis

Research Field ： Complex Dynamics


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   【Papers】
  1. Koh KATAGATA, Dynamics of transcendental entire functions with Siegel disks and its applications, Bull. Korean Math. Soc. 48 (2011), no. 4, 713--724.

  2. Koh KATAGATA, Dynamics of rational functions with Siegel disks and polynomial semigroups, Mem. Fac. Sci. Eng. Shimane Univ. Ser. B Math. Sci. 42 (2009), 17--57.

  3. Koh KATAGATA, Blaschke products and rational functions with Siegel disks, J. Korean Math. Soc. 46 (2009), no. 1, 151--170.

  4. Koh KATAGATA, Disconnected Julia sets of quartic polynomials and a new topology of the symbol space, Proc. Japan Acad. Ser. A Math. Sci. 84 (2008), no. 7, 117--122.

  5. Koh KATAGATA, Dynamics of even polynomials with real coefficients, Int. J. Math. Anal. (Ruse) 2 (2008), no. 1-4, 85--96.

  6. Koh KATAGATA, On a certain kind of polynomials of degree 4 with disconnected Julia set, Discrete Contin. Dyn. Syst. 20 (2008), no. 4, 975--987.

  7. Koh KATAGATA, Some cubic Blaschke products and quadratic rational functions with Siegel disks, Int. J. Contemp. Math. Sci. 2 (2007), no. 29-32, 1455--1470.