Fujii, Jun Ichi; Fujii, Masatoshi; Ritsuo, Nakamoto Riccati equation and positivity of operator matrices. (English) Zbl 1186.47011 Kyungpook Math. J. 49, No. 4, 595-603 (2009). MSC: 47A62 47A63 47A64 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Kyungpook Math. J. 49, No. 4, 595--603 (2009; Zbl 1186.47011) Full Text: DOI
Fujii, Jun Ichi; Fujii, Masatoshi; Seo, Yuki The Golden-Thompson-Segal type inequalities related to the weighted geometric mean due to Lawson-Lim. (English) Zbl 1201.47012 J. Math. Inequal. 3, No. 4, 511-518 (2009). Reviewer: Jiangtao Yuan (Henan) MSC: 47A30 47A63 47A64 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., J. Math. Inequal. 3, No. 4, 511--518 (2009; Zbl 1201.47012) Full Text: DOI Link
Fujii, Jun Ichi Inequalities related to determinants of positive operators. (Japanese) Zbl 0936.47506 RIMS Kokyuroku 1080, 140-148 (1999). MSC: 47B15 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii}, RIMS Kokyuroku 1080, 140--148 (1999; Zbl 0936.47506)
Fujii, Jun Ichi; Furuta, Takayuki An operator version of the Wilf-Diaz-Metcalf inequality. (English) Zbl 1019.47022 Nihonkai Math. J. 9, No. 1, 47-52 (1998). MSC: 47A63 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{T. Furuta}, Nihonkai Math. J. 9, No. 1, 47--52 (1998; Zbl 1019.47022)
Fujii, Jun Ichi; Fujii, Masatoshi; Furuta, Takayuki; Nakamoto, Ritsuo Norm inequalities equivalent to Heinz inequality. (English) Zbl 0783.47008 Proc. Am. Math. Soc. 118, No. 3, 827-830 (1993). Reviewer: P.Zabrejko MSC: 47A30 47B15 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Proc. Am. Math. Soc. 118, No. 3, 827--830 (1993; Zbl 0783.47008) Full Text: DOI
Fujii, Jun Ichi Entropy of graphs. (English) Zbl 0764.94002 Math. Jap. 38, No. 1, 39-46 (1993). MSC: 94A17 05C20 47A10 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 38, No. 1, 39--46 (1993; Zbl 0764.94002)
Fujii, Jun Ichi; Fujii, Masatoshi; Izumino, Saichi; Kubo, Fumio; Nakamoto, Ritsuo Strang’s inequality. (English) Zbl 0772.47004 Math. Jap. 37, No. 3, 479-486 (1992). Reviewer: K.N.Boyadzhiev (Ada) MSC: 47A63 47B15 47A10 47A12 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Japon. 37, No. 3, 479--486 (1992; Zbl 0772.47004)
Fujii, Junichi; Fujii, Masatoshi; Furuta, Takayuki; Nakamoto, Ritsuo Norm inequalities related to McIntosh type inequality. (English) Zbl 0956.47502 Nihonkai Math. J. 3, No. 1, 67-72 (1992). MSC: 47A63 47A30 47B15 47B20 PDFBibTeX XMLCite \textit{J. Fujii} et al., Nihonkai Math. J. 3, No. 1, 67--72 (1992; Zbl 0956.47502)
Fujii, Jun Ichi; Fujii, Masatoshi; Sasaoka, Hiromitsu; Watatani, Yasuo The spectrum of an infinite directed graph. (English) Zbl 0754.47004 Math. Jap. 36, No. 4, 607-625 (1991). MSC: 47A10 47A12 05C20 94D05 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Japon. 36, No. 4, 607--625 (1991; Zbl 0754.47004)
Fujii, Jun Ichi; Fujii, Masatoshi An analogue to Hansen’s theory of generalized Löwner’s functions. (English) Zbl 0719.47011 Math. Jap. 35, No. 2, 327-330 (1990). Reviewer: J.Zafarani (Isfahan) MSC: 47A63 47B15 47A60 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Fujii}, Math. Japon. 35, No. 2, 327--330 (1990; Zbl 0719.47011)
Fujii, Jun Ichi; Fujii, Masatoshi A norm inequality for operator monotone functions. (English) Zbl 0719.47010 Math. Jap. 35, No. 2, 249-252 (1990). Reviewer: J.Zafarani (Isfahan) MSC: 47A63 47B15 47A60 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Fujii}, Math. Japon. 35, No. 2, 249--252 (1990; Zbl 0719.47010)
Fujii, Jun Ichi; Fujii, Masatoshi; Seo, Yuki An extension of the Kubo-Ando theory: Solidarities. (English) Zbl 0703.47013 Math. Jap. 35, No. 2, 387-396 (1990). Reviewer: J.I.Fujii MSC: 47A63 94A17 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Japon. 35, No. 2, 387--396 (1990; Zbl 0703.47013)
Fujii, Jun Ichi On informations for fuzzy events by the relative operator entropy. (English) Zbl 0696.94006 Math. Jap. 35, No. 3, 573-575 (1990). MSC: 94A17 47B15 47A60 94D05 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 35, No. 3, 573--575 (1990; Zbl 0696.94006)
Fujii, J. I.; Nakamura, M. Operator entropy and fuzziness in noncommutative information theory. (English) Zbl 0696.94005 Math. Jap. 35, No. 3, 509-512 (1990). MSC: 94A17 47B15 47A60 94D05 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Nakamura}, Math. Japon. 35, No. 3, 509--512 (1990; Zbl 0696.94005)
Fujii, Jun Ichi; Kamei, Eizaburo Relative operator entropy in noncommutative information theory. (English) Zbl 0699.46048 Math. Jap. 34, No. 3, 341-348 (1989). Reviewer: V.Wrobel MSC: 46L51 46L53 46L54 94A17 47A60 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{E. Kamei}, Math. Japon. 34, No. 3, 341--348 (1989; Zbl 0699.46048)
Fujii, Jun Ichi; Kamei, Eizaburo Uhlmann’s interpolational method for operator means. (English) Zbl 0695.47013 Math. Jap. 34, No. 4, 541-547 (1989). Reviewer: M.Radjabalipour MSC: 47A60 94A17 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{E. Kamei}, Math. Japon. 34, No. 4, 541--547 (1989; Zbl 0695.47013)
Fufii, Jun Ichi; Seo, Yuki Jones’ index and the relative operator entropy. (English) Zbl 0685.46036 Math. Jap. 34, No. 3, 349-351 (1989). Reviewer: M.B.Bekka MSC: 46L35 94A17 47B15 47A60 46L55 PDFBibTeX XMLCite \textit{J. I. Fufii} and \textit{Y. Seo}, Math. Japon. 34, No. 3, 349--351 (1989; Zbl 0685.46036)
Fujii, Jun Ichi; Nakamura, Masahiro; Seo, Yuki Convergence of sequences defined by operator means. (English) Zbl 0661.47025 Math. Jap. 34, No. 1, 9-14 (1989). MSC: 47B15 47A60 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Japon. 34, No. 1, 9--14 (1989; Zbl 0661.47025)
Fujii, Jun Ichi On Izumino’s view of operator means. (English) Zbl 0676.47006 Math. Jap. 33, No. 5, 671-675 (1988). Reviewer: Bui Doan Khanh MSC: 47A60 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 33, No. 5, 671--675 (1988; Zbl 0676.47006)
Fujii, Jun Ichi Characterizing the geometric operator mean by the interpolation theory. (English) Zbl 0672.47014 Math. Jap. 33, No. 6, 845-849 (1988). Reviewer: M.Radjabalipour MSC: 47B15 47A05 47A30 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 33, No. 6, 845--849 (1988; Zbl 0672.47014)
Fujii, Jun Ichi; Kubo, Fumio; Kubo, Kyoko A parametrization between operator means. (English) Zbl 0657.47026 Math. Jap. 33, No. 2, 201-208 (1988). Reviewer: B.P.Duggal MSC: 47B15 47C15 47A60 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Japon. 33, No. 2, 201--208 (1988; Zbl 0657.47026)
Fujii, Jun Ichi; Kubo, Fumio; Kubo, Kyoko A parametrization between operator means. (English) Zbl 0645.47019 Math. Jap. 33, No. 2, 201-208 (1988). Reviewer: B.P.Duggal MSC: 47B15 47C15 47A60 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Japon. 33, No. 2, 201--208 (1988; Zbl 0645.47019)
Fujii, Jun Ichi; Nakamoto, Ritsuo The Stein transformation on positive operators. (English) Zbl 0634.47021 Math. Jap. 32, 697-700 (1987). Reviewer: M.Radjabalipour MSC: 47B15 47A05 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{R. Nakamoto}, Math. Japon. 32, 697--700 (1987; Zbl 0634.47021)
Fujii, Jun Ichi; Fujii, Masatoshi; Takehana, Hiroaki Interpolation theorems of Donoghue’s type on positive operators. (English) Zbl 0613.47021 Math. Jap. 31, 553-559 (1986). MSC: 47B15 47A60 46M35 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Japon. 31, 553--559 (1986; Zbl 0613.47021)
Fujii, Jun Ichi Operator monotone functions and Donoghue’s theorem. (English) Zbl 0594.47019 Math. Jap. 31, 319-328 (1986). MSC: 47B15 47A60 46M35 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 31, 319--328 (1986; Zbl 0594.47019)
Fujii, Jun Ichi Operator-concave functions and means of positive linear functionals. (English) Zbl 0455.47017 Math. Jap. 25, 453-461 (1980). MSC: 47B15 47A60 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 25, 453--461 (1980; Zbl 0455.47017)
Fujii, Jun Ichi; Furuta, Takayuki Holub’s factorization and normal approximants of idempotent operators. (English) Zbl 0431.47014 Math. Jap. 25, 143-145 (1980). MSC: 47A65 47B15 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{T. Furuta}, Math. Japon. 25, 143--145 (1980; Zbl 0431.47014)
Fujii, Jun Ichi On geometric and harmonic means of positive operators. (English) Zbl 0479.47014 Math. Jap. 24, 203-207 (1979). MSC: 47B15 47A60 26A48 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 24, 203--207 (1979; Zbl 0479.47014)
Fujii, Jun Ichi Initial conditions on operator monotone functions. (English) Zbl 0435.47031 Math. Jap. 24, 459-462 (1979). MSC: 47B15 47A60 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 24, 459--462 (1979; Zbl 0435.47031)
Fujii, Jun Ichi; Fujii, Masatoshi Some remarks on operator means. (English) Zbl 0435.47030 Math. Jap. 24, 335-339 (1979). MSC: 47B15 47A60 26A48 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Fujii}, Math. Japon. 24, 335--339 (1979; Zbl 0435.47030)
Fujii, Jun-Ichi; Kato, Yoshinobu Izumino’s theorem for algebraic operators. (English) Zbl 0407.47013 Math. Jap. 24, 81-83 (1979). MSC: 47B15 47A53 41A65 PDFBibTeX XMLCite \textit{J.-I. Fujii} and \textit{Y. Kato}, Math. Japon. 24, 81--83 (1979; Zbl 0407.47013)
Fujii, Jun-ichi Arithmetico-geometric mean of operators. (English) Zbl 0407.47011 Math. Jap. 23, 667-669 (1979). MSC: 47B15 46L10 PDFBibTeX XMLCite \textit{J.-i. Fujii}, Math. Japon. 23, 667--669 (1979; Zbl 0407.47011)