Izuchi, Kei Ji; Izuchi, Yuko Path connected components in the spaces of nonzero weighted composition operators with the strong operator topology. I. (English) Zbl 1449.47053 Int. J. Funct. Anal. Oper. Theory Appl. 7, No. 3, 161-176 (2015). MSC: 47B33 46E15 PDFBibTeX XMLCite \textit{K. J. Izuchi} and \textit{Y. Izuchi}, Int. J. Funct. Anal. Oper. Theory Appl. 7, No. 3, 161--176 (2015; Zbl 1449.47053) Full Text: DOI
Izuchi, Keiji; Yang, Rongwei \(N_\phi\)-type quotient modules on the torus. (English) Zbl 1175.47007 New York J. Math. 14, 431-457 (2008). Reviewer: Pengyan Hu (Shenzhen) MSC: 47A15 46E20 47A13 30H10 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{R. Yang}, New York J. Math. 14, 431--457 (2008; Zbl 1175.47007) Full Text: arXiv EuDML EMIS
Izuchi, Kei Ji; Kim, Hong Oh Singular inner functions whose Frostman shifts are Carleson-Newman Blaschke products. II. (English) Zbl 1132.30020 Complex Var. Elliptic Equ. 52, No. 5, 425-437 (2007). Reviewer: Raymond Mortini (Metz) MSC: 30D50 46J15 PDFBibTeX XMLCite \textit{K. J. Izuchi} and \textit{H. O. Kim}, Complex Var. Elliptic Equ. 52, No. 5, 425--437 (2007; Zbl 1132.30020) Full Text: DOI
Izuchi, Keiji; Izuchi, Kou Hei Rank-one commutators on invariant subspaces of the Hardy space on the bidisk. (English) Zbl 1099.47003 J. Math. Anal. Appl. 316, No. 1, 1-8 (2006). Reviewer: Takahiko Nakazi (Sapporo) MSC: 47A15 46E20 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{K. H. Izuchi}, J. Math. Anal. Appl. 316, No. 1, 1--8 (2006; Zbl 1099.47003) Full Text: DOI
Izuchi, Keiji; Ohno, Shûichi Hankel-type operators on the space of bounded harmonic functions. (English) Zbl 1097.47034 Proc. Am. Math. Soc. 134, No. 5, 1359-1364 (2006). Reviewer: Florian-Horia Vasilescu (Villeneuve d’Ascq) MSC: 47B38 30D55 46J10 47B35 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{S. Ohno}, Proc. Am. Math. Soc. 134, No. 5, 1359--1364 (2006; Zbl 1097.47034) Full Text: DOI
Izuchi, Keiji; Izuchi, Kou Hei Polynomials having leading terms over \(\mathbb C^2\) in the Fock space. (English) Zbl 1088.46015 J. Funct. Anal. 225, No. 2, 439-479 (2005). Reviewer: Serguei Shimorin (Stockholm) MSC: 46E20 47A15 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{K. H. Izuchi}, J. Funct. Anal. 225, No. 2, 439--479 (2005; Zbl 1088.46015) Full Text: DOI
Izuchi, Keiji; Nakazi, Takahiko; Seto, Michio Backward shift invariant subspaces in the bidisc. III. (English) Zbl 1087.47007 Acta Sci. Math. 70, No. 3-4, 727-749 (2004). Reviewer: Shanli Sun (Beijing) MSC: 47A15 47B37 32A35 46E20 PDFBibTeX XMLCite \textit{K. Izuchi} et al., Acta Sci. Math. 70, No. 3--4, 727--749 (2004; Zbl 1087.47007)
Izuchi, Keiji; Yang, Rongwei Strictly contractive compression on backward shift invariant subspaces over the torus. (English) Zbl 1062.47017 Acta Sci. Math. 70, No. 1-2, 147-165 (2004). MSC: 47A20 46E20 47A13 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{R. Yang}, Acta Sci. Math. 70, No. 1--2, 147--165 (2004; Zbl 1062.47017)
Izuchi, Keiji; Suárez, Daniel Norm closed invariant subspaces in \(L^\infty\) and \(H^\infty\). (English) Zbl 1068.47009 Glasg. Math. J. 46, No. 2, 399-404 (2004). Reviewer: Ömer Gök (Istanbul) MSC: 47A15 46J10 46E15 46J15 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{D. Suárez}, Glasg. Math. J. 46, No. 2, 399--404 (2004; Zbl 1068.47009) Full Text: DOI
Izuchi, Keiji (ed.) Analytic function spaces and operators on these spaces. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto, Japan, November 24–26, 1999. (English, Japanese) Zbl 0973.46001 RIMS Kokyuroku 1137, ii, 111 p. (2000). MSC: 46-06 00B25 30-06 46E15 47-06 47B38 PDFBibTeX XMLCite \textit{K. Izuchi} (ed.), RIMS Kokyuroku 1137, ii, 111 p. (2000; Zbl 0973.46001)
Izuchi, Keiji Sequential type Korovkin theorem on \(L^ \infty\) for \(QC\)-test functions. (English) Zbl 0863.41015 Proc. Am. Math. Soc. 125, No. 4, 1153-1159 (1997). MSC: 41A35 46J10 PDFBibTeX XMLCite \textit{K. Izuchi}, Proc. Am. Math. Soc. 125, No. 4, 1153--1159 (1997; Zbl 0863.41015) Full Text: DOI
Hatori, Osamu; Izuchi, Keiji Apostol algebras and decomposition in Douglas algebras. (English) Zbl 0901.46046 Mich. Math. J. 44, No. 3, 435-449 (1997). Reviewer: K.B.Laursen (København) MSC: 46J30 PDFBibTeX XMLCite \textit{O. Hatori} and \textit{K. Izuchi}, Mich. Math. J. 44, No. 3, 435--449 (1997; Zbl 0901.46046) Full Text: DOI
Izuchi, K.; Takagi, H.; Watanabe, S. Sequential Korovkin type theorems and weighted composition operators. (English) Zbl 0858.41019 Acta Sci. Math. 62, No. 1-2, 161-174 (1996). Reviewer: D.Wulbert (La Jolla) MSC: 41A36 46J10 47B38 PDFBibTeX XMLCite \textit{K. Izuchi} et al., Acta Sci. Math. 62, No. 1--2, 161--174 (1996; Zbl 0858.41019)
Gorkin, Pamela; Izuchi, Keiji Bourgain algebras on the maximal ideal space of \(H^ \infty\). (English) Zbl 0843.46037 Rocky Mt. J. Math. 25, No. 3, 1025-1051 (1995). MSC: 46J15 46J30 46J20 PDFBibTeX XMLCite \textit{P. Gorkin} and \textit{K. Izuchi}, Rocky Mt. J. Math. 25, No. 3, 1025--1051 (1995; Zbl 0843.46037) Full Text: DOI
Izuchi, Keiji; Stroethoff, Karel; Yale, Keith Bourgain algebras of spaces of harmonic functions. (English) Zbl 0916.46043 Mich. Math. J. 41, No. 2, 309-321 (1994). Reviewer: G.Csordas (Honolulu) MSC: 46J15 46J30 PDFBibTeX XMLCite \textit{K. Izuchi} et al., Mich. Math. J. 41, No. 2, 309--321 (1994; Zbl 0916.46043) Full Text: DOI
Gorkin, Pamela; Izuchi, Keiji; Mortini, Raymond Bourgain algebras of Douglas algebras. (English) Zbl 0763.46046 Can. J. Math. 44, No. 4, 797-804 (1992). Reviewer: T.Nakazi (Sapporo) MSC: 46J10 46J30 PDFBibTeX XMLCite \textit{P. Gorkin} et al., Can. J. Math. 44, No. 4, 797--804 (1992; Zbl 0763.46046) Full Text: DOI
Guillory, Carroll; Izuchi, Keiji Maximal Douglas subalgebras and minimal support points. (English) Zbl 0760.46046 Proc. Am. Math. Soc. 116, No. 2, 477-481 (1992). Reviewer: R.Mortini (Karlsruhe) MSC: 46J15 46J10 46J30 PDFBibTeX XMLCite \textit{C. Guillory} and \textit{K. Izuchi}, Proc. Am. Math. Soc. 116, No. 2, 477--481 (1992; Zbl 0760.46046) Full Text: DOI
Gorkin, Pamela; Izuchi, Keiji Some counterexamples in subalgebras of \(L^{\infty}(D)\). (English) Zbl 0732.46035 Indiana Univ. Math. J. (to appear). Reviewer: P.Gorkin (Lewisburg) MSC: 46J30 46J10 46J15 30D50 PDFBibTeX XML
Izuchi, Keiji The Bochner-Schoenberg-Eberlein theorem and spaces of analytic functions on the open unit disc. (English) Zbl 0754.30038 Math. Jap. 37, No. 1, 65-77 (1992). Reviewer: R.Mortini (Karlsruhe) MSC: 30H05 46E15 PDFBibTeX XMLCite \textit{K. Izuchi}, Math. Japon. 37, No. 1, 65--77 (1992; Zbl 0754.30038)
Gorkin, Pamela; Izuchi, Keiji Some counterexamples in subalgebras of \(L^ \infty{} (D)\). (English) Zbl 0745.46055 Indiana Univ. Math. J. 40, No. 4, 1301-1314 (1991). MSC: 46J30 46J10 46J15 30D50 PDFBibTeX XMLCite \textit{P. Gorkin} and \textit{K. Izuchi}, Indiana Univ. Math. J. 40, No. 4, 1301--1314 (1991; Zbl 0745.46055) Full Text: DOI
[Takahasi, Sin-ei; Izuchi, Keiji; Saito, Kichi-Suke; Enomoto, Masatoshi; Hatori, Osamu; Nakazato, Hiroshi; Choda, Marie; Saitô, Kazuyuki; Hiai, Fumio; Nakamura, Yoshihiro; Watanabe, Keiichi; Homma, Katsumi] On analyticity in operator algebras. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto (Japan), August 24-27, 1988. (Japanese, English) Zbl 0718.46022 RIMS Kokyuroku, 674. Kyoto: Kyoto University, Research Institute for Mathematical Sciences. ii, 159 p. (1988). MSC: 46Lxx 46-06 00B25 46H25 47D09 46J20 PDFBibTeX XMLCite On analyticity in operator algebras. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto (Japan), August 24-27, 1988 (Japanese). Kyoto: Kyoto University, Research Institute for Mathematical Sciences (1988; Zbl 0718.46022)
Izuchi, K.; Izuchi, Y. Inner functions and division in Douglas algebras. II. (English) Zbl 0663.46048 J. Lond. Math. Soc., II. Ser. 38, No. 1, 146-152 (1988). Reviewer: R.Mortini MSC: 46J30 46J15 30H05 30D05 46J10 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{Y. Izuchi}, J. Lond. Math. Soc., II. Ser. 38, No. 1, 146--152 (1988; Zbl 0663.46048) Full Text: DOI
Izuchi, Keiji A function theoretic proof of Axler’s zero multiplier theorem. (English) Zbl 0643.32003 Can. Math. Bull. 31, No. 1, 117-120 (1988). Reviewer: P.Caraman MSC: 32A30 30H05 46E10 PDFBibTeX XMLCite \textit{K. Izuchi}, Can. Math. Bull. 31, No. 1, 117--120 (1988; Zbl 0643.32003) Full Text: DOI
Izuchi, Keiji; Ohno, Shûichi Restricted left invertible Toeplitz operators on multiply connected domains. (English) Zbl 0622.47024 Proc. Am. Math. Soc. 100, 127-132 (1987). Reviewer: R.Mortini MSC: 47B35 46J10 30H05 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{S. Ohno}, Proc. Am. Math. Soc. 100, 127--132 (1987; Zbl 0622.47024) Full Text: DOI
Izuchi, Keiji; Izuchi, Yuko Inner functions and division in Douglas algebras. (English) Zbl 0614.46045 Mich. Math. J. 33, 435-443 (1986). Reviewer: R.Mortini MSC: 46J30 46J15 30D50 30H05 46J10 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{Y. Izuchi}, Mich. Math. J. 33, 435--443 (1986; Zbl 0614.46045) Full Text: DOI
Izuchi, Keiji; Izuchi, Yuko Flows and function algebras of generalized analytic functions. (English) Zbl 0416.46039 Yokohama Math. J. 26, 7-17 (1978). MSC: 46J10 28D10 46F15 46F20 PDFBibTeX XMLCite \textit{K. Izuchi} and \textit{Y. Izuchi}, Yokohama Math. J. 26, 7--17 (1978; Zbl 0416.46039)
Jimbo, Toshiya; Tsurumi, Kazuyuki; Izuchi, Keiji Continuity of H-derivations on commutative Banach algebras. (English) Zbl 0232.46058 Sci. Rep. Tokyo Kyoiku Daigaku, Sect. A 11, 6-9 (1971). MSC: 46J45 46J10 30H05 PDFBibTeX XMLCite \textit{T. Jimbo} et al., Sci. Rep. Tokyo Kyoiku Daigaku, Sect. A 11, 6--9 (1971; Zbl 0232.46058)