Keiji Izuchi

Topological Structure of the Space of Weighted Composition Operators on H ∞

Takuya Hosokawa, Keiji Izuchi, Shûichi Ohno · Integral Equations and Operator Theory · 2005 · 56 citations

Natural Sciences, Mathematics, Representation Theory +11

Isolated points and essential components of composition operators on 𝐻^{∞}

Takuya Hosokawa, Keiji Izuchi, Dechao Zheng · Proceedings of the American Mathematical Society · 2001 · 49 citations · Full text

Natural Sciences, Mathematics, Algebra +6

Bourgain Algebras of Douglas Algebras

Pamela Gorkin, Keiji Izuchi, Raymond Mortini · Canadian Journal of Mathematics · 1992 · 24 citations · Full text

Natural Sciences, Mathematics, Algebra +4

QC-level sets and quotients of Douglas algebras

Keiji Izuchi · Journal of Functional Analysis · 1986 · 22 citations

Natural Sciences, Mathematics, Algebra +3

Essential norms of differences of composition operators on $\bm{H^\infty}$

Takuya Hosokawa, Keiji Izuchi · Journal of the Mathematical Society of Japan · 2005 · 20 citations

Natural Sciences, Mathematics, Algebra +8