Fujii, Jun Ichi; Seo, Yuki Relative operator entropy. (English) Zbl 07678098 Aron, Richard M. (ed.) et al., Operator and norm inequalities and related topics. Cham: Birkhäuser. Trends Math., 69-95 (2022). MSC: 47A30 47A50 47A63 46B20 47B35 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, in: Operator and norm inequalities and related topics. Cham: Birkhäuser. 69--95 (2022; Zbl 07678098) Full Text: DOI
Fujii, Jun Ichi Means for fixed rank PSD matrices. (English) Zbl 1440.15031 Adv. Oper. Theory 5, No. 3, 816-838 (2020). Reviewer: K. C. Sivakumar (Chennai) MSC: 15B48 15A60 47A64 15A16 51M35 PDFBibTeX XMLCite \textit{J. I. Fujii}, Adv. Oper. Theory 5, No. 3, 816--838 (2020; Zbl 1440.15031) Full Text: DOI
Fujii, Jun Ichi; Seo, Yuki The unique solution of the Karcher equation and the self-adjointness of the Karcher mean. (English) Zbl 07048435 Linear Multilinear Algebra 67, No. 5, 976-986 (2019). MSC: 47A64 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Linear Multilinear Algebra 67, No. 5, 976--986 (2019; Zbl 07048435) Full Text: DOI
Fujii, Jun Ichi; Seo, Yuki The relative operator entropy and the Karcher mean. (English) Zbl 1507.47041 Linear Algebra Appl. 542, 4-34 (2018). MSC: 47A64 47A63 47A58 94A17 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Linear Algebra Appl. 542, 4--34 (2018; Zbl 1507.47041) Full Text: DOI
Fujii, Jun Ichi; Seo, Yuki Tsallis relative operator entropy with negative parameters. (English) Zbl 1368.47017 Adv. Oper. Theory 1, No. 2, 219-235 (2016). MSC: 47A63 47A64 94A17 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Adv. Oper. Theory 1, No. 2, 219--235 (2016; Zbl 1368.47017) Full Text: DOI
Zuo, Hongliang; Fujii, Masatoshi; Fujii, Junichi; Seo, Yuki Singular value inequalities related to the Audenaert-Zhan inequality. (English) Zbl 1350.15008 Oper. Matrices 10, No. 2, 389-395 (2016). Reviewer: Tin Yau Tam (Auburn) MSC: 15A42 15A18 47A64 26E60 PDFBibTeX XMLCite \textit{H. Zuo} et al., Oper. Matrices 10, No. 2, 389--395 (2016; Zbl 1350.15008) Full Text: DOI
Fujii, Jun Ichi; Fujii, Masatoshi; Seo, Yuki; Zuo, Hongliang Recent developments of matrix versions of the arithmetic-geometric mean inequality. (English) Zbl 1357.47017 Ann. Funct. Anal. 7, No. 1, 102-117 (2016). Reviewer: Minghua Lin (Shanghai) MSC: 47A63 15A18 15A42 47A30 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Ann. Funct. Anal. 7, No. 1, 102--117 (2016; Zbl 1357.47017) Full Text: DOI Euclid
Fujii, Jun Ichi; Fujii, Masatoshi; Seo, Yuki Buzano inequality in inner product \(C^*\)-modules via the operator geometric mean. (English) Zbl 1459.46052 Filomat 29, No. 8, 1689-1694 (2015). MSC: 46L08 47A64 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Filomat 29, No. 8, 1689--1694 (2015; Zbl 1459.46052) Full Text: DOI
Fujii, Jun Ichi Reproducing property for interpolational path of operator means. (English) Zbl 1348.47018 Sci. Math. Jpn. 78, No. 1, 81-86 (2015). MSC: 47A64 47A63 26E60 PDFBibTeX XMLCite \textit{J. I. Fujii}, Sci. Math. Jpn. 78, No. 1, 81--86 (2015; Zbl 1348.47018) Full Text: Link Link
Fujii, Jun Ichi; Seo, Yuki On the Ando-Li-Mathias mean and the Karcher mean of positive definite matrices. (English) Zbl 1322.47019 Linear Multilinear Algebra 63, No. 3, 636-649 (2015). Reviewer: Mohammad Sal Moslehian (Karlstad) MSC: 47A30 47A63 47A64 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Linear Multilinear Algebra 63, No. 3, 636--649 (2015; Zbl 1322.47019) Full Text: DOI
Zuo, Hongliang; Fujii, Masatoshi; Fujii, Jun Ichi; Seo, Yuki Upper bound for spectra of Jensen operator and its application to reverse arithmetic-geometric means. (English) Zbl 1321.47019 Math. Inequal. Appl. 17, No. 2, 641-648 (2014). Reviewer: Mohammad Sal Moslehian (Karlstad) MSC: 47A30 47A63 PDFBibTeX XMLCite \textit{H. Zuo} et al., Math. Inequal. Appl. 17, No. 2, 641--648 (2014; Zbl 1321.47019) Full Text: DOI Link
Fujii, Jun Ichi; Fujii, Masatoshi; Seo, Yuki Operator inequalities on Hilbert \(C^{\ast}\)-modules via the Cauchy-Schwarz inequality. (English) Zbl 1295.46039 Math. Inequal. Appl. 17, No. 1, 295-315 (2014). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 46L08 47A30 47A63 47A64 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Inequal. Appl. 17, No. 1, 295--315 (2014; Zbl 1295.46039) Full Text: DOI
Fujii, Jun Ichi; Fujii, Masatoshi; Nakamoto, Ritsuo An operator inequality implying the usual and chaotic orders. (English) Zbl 1408.47005 Ann. Funct. Anal. 5, No. 1, 24-29 (2014). MSC: 47A63 47A56 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Ann. Funct. Anal. 5, No. 1, 24--29 (2014; Zbl 1408.47005) Full Text: DOI EMIS
Dragomir, Sever S.; Fujii, Jun Ichi; Seo, Yuki Bounds for an operator concave function. (English) Zbl 1298.47024 Electron. J. Linear Algebra 26, 192-200 (2013). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 47A63 26A51 PDFBibTeX XMLCite \textit{S. S. Dragomir} et al., Electron. J. Linear Algebra 26, 192--200 (2013; Zbl 1298.47024) Full Text: DOI Link
Moslehian, Mohammad Sal; Fujii, Jun Ichi Operator inequalities related to weak 2-positivity. (English) Zbl 1283.47020 J. Math. Inequal. 7, No. 2, 175-182 (2013). Reviewer: Maryam Khosravi (Kerman) MSC: 47A63 PDFBibTeX XMLCite \textit{M. S. Moslehian} and \textit{J. I. Fujii}, J. Math. Inequal. 7, No. 2, 175--182 (2013; Zbl 1283.47020) Full Text: DOI arXiv Link
Fujii, Jun Ichi Interpolationality for symmetric operator means. (English) Zbl 1284.47018 Sci. Math. Jpn. 75, No. 3, 267-274 (2012). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 47A64 47A63 26E60 PDFBibTeX XMLCite \textit{J. I. Fujii}, Sci. Math. Jpn. 75, No. 3, 267--274 (2012; Zbl 1284.47018) Full Text: Link
Fujii, Jun Ichi; Fujii, Masatoshi Upper estimations on integral operator means. (English) Zbl 1292.47011 Sci. Math. Jpn. 75, No. 2, 217-222 (2012). Reviewer: Jaspal Singh Aujla (Jalandhar) MSC: 47A64 47A63 47A58 26E60 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Fujii}, Sci. Math. Jpn. 75, No. 2, 217--222 (2012; Zbl 1292.47011) Full Text: Link
Fujii, Jun-Ichi; Pečarić, Josip; Seo, Yuki The Jensen inequality in an external formula. (English) Zbl 1267.47024 J. Math. Inequal. 6, No. 3, 473-480 (2012). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 47A63 47A60 PDFBibTeX XMLCite \textit{J.-I. Fujii} et al., J. Math. Inequal. 6, No. 3, 473--480 (2012; Zbl 1267.47024) Full Text: DOI Link
Fujii, J. I.; Fujii, M.; Moslehian, M. S.; Seo, Y. Cauchy-Schwarz inequality in semi-inner product \(C^{\ast}\)-modules via polar decomposition. (English) Zbl 1257.46026 J. Math. Anal. Appl. 394, No. 2, 835-840 (2012). MSC: 46L08 47A63 47A64 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., J. Math. Anal. Appl. 394, No. 2, 835--840 (2012; Zbl 1257.46026) Full Text: DOI
Fujii, Jun-Ichi; Fujii, Masatoshi; Moslehian, Mohammad Sal; Pečarić, Josip E.; Seo, Yuki Reverse Cauchy-Schwarz type inequalities in pre-inner product \(C^{*}\)-modules. (English) Zbl 1267.46074 Hokkaido Math. J. 40, No. 3, 393-409 (2011). MSC: 46L08 26D15 46L05 47A30 47A63 PDFBibTeX XMLCite \textit{J.-I. Fujii} et al., Hokkaido Math. J. 40, No. 3, 393--409 (2011; Zbl 1267.46074) Full Text: DOI Euclid
Fujii, Jun Ichi An external version of the Jensen operator inequality. (English) Zbl 1233.47011 Sci. Math. Jpn. 73, No. 2-3, 125-128 (2011). Reviewer: Edward L. Pekarev (Odessa) MSC: 47A63 47N10 26A51 PDFBibTeX XMLCite \textit{J. I. Fujii}, Sci. Math. Jpn. 73, No. 2--3, 125--128 (2011; Zbl 1233.47011) Full Text: Link
Fujii, J.; Kian, M.; Moslehian, M. S. Operator \(Q\)-class functions. (English) Zbl 1219.47029 Sci. Math. Jpn. 73, No. 1, 75-80 (2011). Reviewer: Omar Hirzallah (Zarqa) MSC: 47A63 47B10 47A30 26D99 26A51 PDFBibTeX XMLCite \textit{J. Fujii} et al., Sci. Math. Jpn. 73, No. 1, 75--80 (2011; Zbl 1219.47029) Full Text: Link
Fujii, Jun Ichi Path of quasi-means as a geodesic. (English) Zbl 1208.53026 Linear Algebra Appl. 434, No. 2, 542-558 (2011). Reviewer: Radu Miron (Iaşi) MSC: 53B40 15A60 47A64 PDFBibTeX XMLCite \textit{J. I. Fujii}, Linear Algebra Appl. 434, No. 2, 542--558 (2011; Zbl 1208.53026) Full Text: DOI
Fujii, Jun Ichi Spectrum and entropy for infinite directed graphs. (English) Zbl 1221.05232 Dehmer, Matthias (ed.), Structural analysis of complex networks. Basel: Birkhäuser (ISBN 978-0-8176-4788-9/hbk; 978-0-8176-4789-6/ebook). 105-136 (2011). MSC: 05C50 05C63 94A17 94A24 05C20 05C38 05C90 47A10 47A12 PDFBibTeX XMLCite \textit{J. I. Fujii}, in: Structural analysis of complex networks. Basel: Birkhäuser. 105--136 (2011; Zbl 1221.05232) Full Text: DOI
Kim, Young Ok; Fujii, Jun Ichi; Fujii, Masatoshi; Seo, Yuki Kantorovich type inequalities for the difference with two negative parameters. (English) Zbl 1222.47023 Sci. Math. Jpn. 72, No. 2, 171-183 (2010). Reviewer: Edward L. Pekarev (Odessa) MSC: 47A63 47A64 PDFBibTeX XMLCite \textit{Y. O. Kim} et al., Sci. Math. Jpn. 72, No. 2, 171--183 (2010; Zbl 1222.47023) Full Text: Link
Kim, Young Ok; Seo, Yuki; Fujii, Jun Ichi Kantorovich type inequalities characterize the chaotic order for positive operators. (English) Zbl 1222.47024 Sci. Math. Jpn. 72, No. 2, 139-145 (2010). Reviewer: Edward L. Pekarev (Odessa) MSC: 47A63 PDFBibTeX XMLCite \textit{Y. O. Kim} et al., Sci. Math. Jpn. 72, No. 2, 139--145 (2010; Zbl 1222.47024) Full Text: Link
Fujii, Jun Ichi The Hiai-Petz geodesic for strongly convex norm is the unique shortest path. (English) Zbl 1198.47015 Sci. Math. Jpn. 71, No. 1, 19-26 (2010). Reviewer: Gabriel Larotonda (Buenos Aires) MSC: 47A30 47A64 53B21 15B48 PDFBibTeX XMLCite \textit{J. I. Fujii}, Sci. Math. Jpn. 71, No. 1, 19--26 (2010; Zbl 1198.47015) Full Text: Link
Fujii, Jun Ichi Structure of Hiai-Petz parametrized geometry for positive definite matrices. (English) Zbl 1179.53027 Linear Algebra Appl. 432, No. 1, 318-326 (2010). MSC: 53B40 15A60 47A64 PDFBibTeX XMLCite \textit{J. I. Fujii}, Linear Algebra Appl. 432, No. 1, 318--326 (2010; Zbl 1179.53027) Full Text: DOI
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; Kamei, Eizaburo Path of Bregman-Petz operator divergence. (English) Zbl 1197.47033 Sci. Math. Jpn. 70, No. 3, 329-333 (2009). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 47A64 47A63 94A15 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{E. Kamei}, Sci. Math. Jpn. 70, No. 3, 329--333 (2009; Zbl 1197.47033) Full Text: Link
Fujii, Jun Ichi; Kim, Young Ok A Kantorovich type inequality with a negative parameter. (English) Zbl 1179.47016 Sci. Math. Jpn. 69, No. 2, 265-270 (2009). Reviewer: Takeaki Yamazaki (Yokohama) MSC: 47A63 47A64 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. O. Kim}, Sci. Math. Jpn. 69, No. 2, 265--270 (2009; Zbl 1179.47016) Full Text: Link
Fujii, Jun Ichi; Mićić, Jadranka; Pečarić, Josip; Seo, Yuki Comparison on operator mean geodesics. (English) Zbl 1190.47020 J. Math. Inequal. 2, No. 3, 287-298 (2008). Reviewer: Dumitru Motreanu (Perpignan) MSC: 47A63 47A64 46L05 53C22 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., J. Math. Inequal. 2, No. 3, 287--298 (2008; Zbl 1190.47020) Full Text: DOI
Fujii, Jun Ichi Operator-valued inner product and operator inequalities. (English) Zbl 1151.47024 Banach J. Math. Anal. 2, No. 2, 59-67 (2008). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 47A63 47A75 47A80 47A56 PDFBibTeX XMLCite \textit{J. I. Fujii}, Banach J. Math. Anal. 2, No. 2, 59--67 (2008; Zbl 1151.47024) Full Text: DOI EuDML EMIS
Fujii, Jun Ichi; Matsumoto, Akemi; Nakamura, Masahiro Riccati equation and the Fiedler–Pták spectral geometric mean. (English) Zbl 1165.47014 Sci. Math. Jpn. 66, No. 1, 63-66 (2007). Reviewer: Omar Hirzallah (Zarqa) MSC: 47A64 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Sci. Math. Jpn. 66, No. 1, 63--66 (2007; Zbl 1165.47014)
Fujii, Jun Ichi; Fujii, Masatoshi; Nakamura, Masahiro; Pečarić, Josip; Seo, Yuki A reverse inequality for the weighted geometric mean due to Lawson–Lim. (English) Zbl 1132.47016 Linear Algebra Appl. 427, No. 2-3, 272-284 (2007). Reviewer: Takeaki Yamazaki (Yokohama) MSC: 47A63 47A64 15A42 47B65 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Linear Algebra Appl. 427, No. 2--3, 272--284 (2007; Zbl 1132.47016) Full Text: DOI
Fujii, Jun Ichi; Nakamoto, Ritsuo; Yanagi, Kenjiro Concavity of the auxiliary function appearing in quantum reliability function. (English) Zbl 1300.94033 IEEE Trans. Inf. Theory 52, No. 7, 3310-3313 (2006). MSC: 94A40 47N50 81P45 81S25 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., IEEE Trans. Inf. Theory 52, No. 7, 3310--3313 (2006; Zbl 1300.94033) Full Text: DOI arXiv
Fujii, Jun Ichi; Nakamura, Masahiro; Seo, Yuki Ando’s theorem for Hadamard products and operator means. (English) Zbl 1128.47024 Sci. Math. Jpn. 64, No. 3, 557-562 (2006). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 47A63 47A64 47A58 15A15 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Sci. Math. Jpn. 64, No. 3, 557--562 (2006; Zbl 1128.47024)
Fujii, J. I.; Nakamura, M.; Pečarić, J.; Seo, Y. Bounds for the ratio and difference between parallel sum and series via Mond–Pečarić method. (English) Zbl 1113.47007 Math. Inequal. Appl. 9, No. 4, 749-759 (2006). Reviewer: Omar Hirzallah (Zarqa) MSC: 47A30 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Inequal. Appl. 9, No. 4, 749--759 (2006; Zbl 1113.47007) Full Text: DOI
Fujii, Jun Ichi; Nakamura, Masahiro; Takahasi, Sin-Ei Cooper’s approach to chaotic operator means. (English) Zbl 1117.47013 Sci. Math. Jpn. 63, No. 2, 319-324 (2006). Reviewer: Khristo N. Boyadzhiev (Ada) MSC: 47A64 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Sci. Math. Jpn. 63, No. 2, 319--324 (2006; Zbl 1117.47013)
Fujii, Jun Ichi; Nakamura, Masahiro A characterization of the harmonic operator mean as an extension of Ando’s theorem. (English) Zbl 1112.47013 Sci. Math. Jpn. 63, No. 2, 205-210 (2006). Reviewer: Khristo N. Boyadzhiev (Ada) MSC: 47A64 26A51 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Nakamura}, Sci. Math. Jpn. 63, No. 2, 205--210 (2006; Zbl 1112.47013)
Fujii, Jun Ichi; Seo, Yuki; Tominaga, Masaru Kantorovich type reserve inequalities for operator norm. (English) Zbl 1077.47008 Math. Inequal. Appl. 8, No. 3, 529-535 (2005). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 47A30 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Inequal. Appl. 8, No. 3, 529--535 (2005; Zbl 1077.47008) Full Text: DOI
Fujii, Jun Ichi; Fujii, Masatoshi; Seo, Yuki; Tominaga, Masaru On generalized Kantorovich inequalities. (English) Zbl 1125.47012 Kato, Mikio (ed.) et al., Proceedings of the international symposium on Banach and function spaces, Kitakyushu, Japan, October 2–4, 2003. Yokohama: Yokohama Publishers (ISBN 4-946552-14-6/pbk). 205-213 (2004). Reviewer: Hong-Ke Du (Xi’an) MSC: 47A63 47N40 41A44 41A17 26D15 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., in: Proceedings of the international symposium on Banach and function spaces, Kitakyushu, Japan, October 2--4, 2003. Yokohama: Yokohama Publishers. 205--213 (2004; Zbl 1125.47012)
Fujii, Jun Ichi; Fujii, Masatoshi Jensen’s inequalities of any interval for operators. (English) Zbl 1080.47018 Takahashi, Wataru (ed.) et al., Nonlinear analysis and convex analysis. Proceedings of the 3rd international conference(NACA2003), Tokyo, Japan, August 25–29, 2003. Yokohama: Yokohama Publishers (ISBN 4-946552-15-4/hbk). 29-39 (2004). Reviewer: Khristo N. Boyadzhiev (Ada) MSC: 47A63 47A56 15A18 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Fujii}, in: Nonlinear analysis and convex analysis. Proceedings of the 3rd international conference (NACA2003), Tokyo, Japan, August 25--29, 2003. Yokohama: Yokohama Publishers. 29--39 (2004; Zbl 1080.47018)
Fujii, Jun Ichi; Nakamura, Masahiro; Seo, Yuki Operator valued determinant and Hadamard product. (English) Zbl 1085.47019 Sci. Math. Jpn. 60, No. 1, 1-8 (2004). Reviewer: Birgit Jacob (Dortmund) MSC: 47A56 47A63 15A15 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Sci. Math. Jpn. 60, No. 1, 1--8 (2004; Zbl 1085.47019)
Fujii, Jun Ichi (ed.) Recent topics in operator inequalities. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto, Japan, November 19–21, 2003. (English, Japanese) Zbl 1042.47500 RIMS Kokyuroku 1359, 126 p. (2004). MSC: 47-06 00B25 PDFBibTeX XMLCite \textit{J. I. Fujii} (ed.), RIMS Kokyuroku 1359, 126 p. (2004; Zbl 1042.47500)
Fujii, Jun Ichi; Seo, Yuki; Tominaga, Masaru Kantorovich type operator inequalities via the Specht ratio. (English) Zbl 1057.47018 Linear Algebra Appl. 377, 69-81 (2004). Reviewer: Khristo N. Boyadzhiev (Ada) MSC: 47A63 47A30 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Linear Algebra Appl. 377, 69--81 (2004; Zbl 1057.47018) Full Text: DOI
Fujii, Jun Ichi Kubo-Ando theory for convex functional means. (English) Zbl 1062.47026 Sci. Math. Jpn. 57, No. 2, 351-363 (2003). Reviewer: Takeaki Yamazaki (Yokohama) MSC: 47A64 39B62 26E60 PDFBibTeX XMLCite \textit{J. I. Fujii}, Sci. Math. Jpn. 57, No. 2, 351--363 (2003; Zbl 1062.47026)
Fujii, Jun Ichi; Seo, Yuki Characterizations of chaotic order associated with the Mond-Shisha difference. (English) Zbl 1043.47012 Math. Inequal. Appl. 5, No. 4, 725-734 (2002). Reviewer: Omar Hirzallah (Zarqa) MSC: 47A30 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Math. Inequal. Appl. 5, No. 4, 725--734 (2002; Zbl 1043.47012) Full Text: DOI
Fujii, Masatoshi; Fujii, Jun Ichi Complexity of positive operators and the spectral order. (Japanese) Zbl 0985.47502 RIMS Kokyuroku 1189, 58-65 (2001). MSC: 47A63 47B25 PDFBibTeX XMLCite \textit{M. Fujii} and \textit{J. I. Fujii}, RIMS Kokyuroku 1189, 58--65 (2001; Zbl 0985.47502)
Fujii, Jun Ichi; Nakamoto, Ritsuo; Seo, Yuki Operator inequalities of Malamud and Wielandt. (English) Zbl 0980.47020 Linear Algebra Appl. 326, No. 1-3, 101-109 (2001). Reviewer: Edward L.Pekarev (Odessa) MSC: 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Linear Algebra Appl. 326, No. 1--3, 101--109 (2001; Zbl 0980.47020) Full Text: DOI
Fujii, Jun Ichi On Hua’s operator inequalities. (Japanese) Zbl 0968.47505 RIMS Kokyuroku 1144, 25-30 (2000). MSC: 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii}, RIMS Kokyuroku 1144, 25--30 (2000; Zbl 0968.47505)
Fujii, Jun Ichi Operator inequalities for Schwarz and Hua. (English) Zbl 0959.47010 Sci. Math. 2, No. 3, 263-268 (1999). MSC: 47A63 47C15 PDFBibTeX XMLCite \textit{J. I. Fujii}, Sci. Math. 2, No. 3, 263--268 (1999; Zbl 0959.47010)
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; Yamazaki, Takeaki; Yanagida, Masahiro Simplified proof of characterization of chaotic order via Specht’s ratio. (English) Zbl 0951.47020 Sci. Math. 2, No. 1, 63-64 (1999). Reviewer: V.N.Karpushkin (Moskva) MSC: 47A63 47A30 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Sci. Math. 2, No. 1, 63--64 (1999; Zbl 0951.47020)
Fujii, Jun Ichi; Fujii, Masatoshi Bhatia-Kittaneh’s operator norm inequality. (English) Zbl 0948.47006 Math. Jap. 49, No. 1, 91-92 (1999). Reviewer: Anatoliy Aleksandrovich Kilbas (Minsk) MSC: 47A30 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Fujii}, Math. Japon. 49, No. 1, 91--92 (1999; Zbl 0948.47006)
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 The Ando-Bhatia-Kittaneh inequalities and their equality conditions. (English) Zbl 0949.47014 RIMS Kokyuroku 1027, 1-10 (1998). Reviewer: Anatoliy Aleksandrovich Kilbas (Minsk) MSC: 47A63 47A30 15A60 47B47 PDFBibTeX XMLCite \textit{J. I. Fujii}, RIMS Kokyuroku 1027, 1--10 (1998; Zbl 0949.47014)
Fujii, Jun Ichi; Seo, Yuki Determinant for positive operators. (English) Zbl 0955.47015 Sci. Math. 1, No. 2, 153-156 (1998). MSC: 47A64 47A63 47A30 47B10 47B65 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Sci. Math. 1, No. 2, 153--156 (1998; Zbl 0955.47015)
Fujii, Jun Ichi; Izumino, Saichi; Seo, Yuki Determinant for positive operators and Specht’s theorem. (English) Zbl 0991.47002 Sci. Math. 1, No. 3, 307-310 (1998). MSC: 47A30 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Sci. Math. 1, No. 3, 307--310 (1998; Zbl 0991.47002)
Fujii, Jun Ichi; Seo, Yuki On parametrized operator means dominated by power ones. (English) Zbl 0941.47014 Sci. Math. 1, No. 3, 301-306 (1998). Reviewer: Sun Shanli (Changchun) MSC: 47A64 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Sci. Math. 1, No. 3, 301--306 (1998; Zbl 0941.47014)
Fujii, Jun Ichi Similarity invariants of explications of graphs. (English) Zbl 0836.47014 Math. Jap. 42, No. 2, 233-237 (1995). MSC: 47A65 47A10 47A80 05C75 05C20 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 42, No. 2, 233--237 (1995; Zbl 0836.47014)
Fujii, Jun Ichi The Marcus-Khan theorem for Hilbert space operators. (English) Zbl 0826.47016 Math. Jap. 41, No. 3, 531-535 (1995). MSC: 47A80 47A05 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 41, No. 3, 531--535 (1995; Zbl 0826.47016)
Fujii, Jun Ichi; Seo, Yuki Graphs and tensor products of operators. (English) Zbl 0819.47029 Math. Jap. 41, No. 2, 245-252 (1995). MSC: 47A80 47A10 05C20 47A12 05C50 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Math. Japon. 41, No. 2, 245--252 (1995; Zbl 0819.47029)
Fujii, Junichi Relative operator entropy. (Japanese) Zbl 0900.47013 Fujii, Masatoshi (ed.), Operator inequalities and related topics. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto, Japan, November 28–30, 1994. Kyoto: Kyoto Univ., Research Institute for Mathematical Sciences, RIMS Kôkyûroku. 903, 49-56 (1995). MSC: 47A63 PDFBibTeX XMLCite \textit{J. Fujii}, in: Operator inequalities and related topics. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto, Japan, November 28--30, 1994. Kyoto: Kyoto Univ., Research Institute for Mathematical Sciences. 49--56 (1995; Zbl 0900.47013)
Fujii, Jun Ichi; Nakamura, Masahiro Fuzzy’s but walking shadow. (English) Zbl 0841.94045 Math. Jap. 40, No. 2, 255-257 (1994). Reviewer: S.Rudeanu (Bucureşti) MSC: 94D05 94A17 47A20 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Nakamura}, Math. Japon. 40, No. 2, 255--257 (1994; Zbl 0841.94045)
Fujii, Jun Ichi; Kamei, Eizaburo Interpolational paths and their derivatives. (English) Zbl 0814.47019 Math. Jap. 39, No. 3, 557-560 (1994). MSC: 47A63 47A57 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{E. Kamei}, Math. Japon. 39, No. 3, 557--560 (1994; Zbl 0814.47019)
Fujii, Jun Ichi Convergence to the infimum projection. (English) Zbl 0809.47016 Math. Jap. 38, No. 4, 767-770 (1993). MSC: 47A58 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii}, Math. Japon. 38, No. 4, 767--770 (1993; Zbl 0809.47016)
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 Theorems of Williams and Prasanna. (English) Zbl 0784.47012 Math. Jap. 38, No. 1, 35-37 (1993). Reviewer: A.Martinón (La Laguna) MSC: 47A30 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Fujii}, Math. Japon. 38, No. 1, 35--37 (1993; Zbl 0784.47012)
Fujii, Jun Ichi; Seo, Yuki Graphs and numerical center of mass. (English) Zbl 0781.47012 Math. Jap. 38, No. 2, 351-359 (1993). Reviewer: T.Yoshino (Kawauchi) MSC: 47A12 05C20 05C75 47B20 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Math. Japon. 38, No. 2, 351--359 (1993; Zbl 0781.47012)
Fujii, Jun Ichi; Izumino, Saichi; Nakamura, Masahiro On Hummel’s theorem. (English) Zbl 0790.47015 Math. Jap. 37, No. 5, 985-986 (1992). MSC: 47B06 46B15 47B07 46C15 PDFBibTeX XMLCite \textit{J. I. Fujii} et al., Math. Japon. 37, No. 5, 985--986 (1992; Zbl 0790.47015)
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, Jun Ichi Operator means and range inclusion. (English) Zbl 0788.47011 Linear Algebra Appl. 170, 137-146 (1992). Reviewer: A.A.Kilbas (Minsk) MSC: 47A63 PDFBibTeX XMLCite \textit{J. I. Fujii}, Linear Algebra Appl. 170, 137--146 (1992; Zbl 0788.47011) Full Text: DOI
Fujii, Jun Ichi Operator means and the relative operator entropy. (English) Zbl 0792.47014 Ando, T. (ed.) et al., Operator theory and complex analysis. Proceedings of a workshop, held in Sapporo, Japan, June 11-14, 1991. Basel: Birkhäuser. Oper. Theory, Adv. Appl. 59, 161-172 (1992). MSC: 47A63 94A17 47A60 PDFBibTeX XMLCite \textit{J. I. Fujii}, in: Operator theory and complex analysis. Proceedings of a workshop, held in Sapporo, Japan, June 11-14, 1991. Basel: Birkhäuser. 161--172 (1992; Zbl 0792.47014)
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; Seo, Yuki Graphs and idempotent operators. (English) Zbl 0771.05044 Math. Jap. 37, No. 6, 1079-1085 (1992). Reviewer: M.Harminc (Košice) MSC: 05C20 47A30 05C75 47A67 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Math. Japon. 37, No. 6, 1079--1085 (1992; Zbl 0771.05044)
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; Seo, Yuki Graphs and the Radjavi-Williams factorization. (English) Zbl 0731.47023 Math. Jap. 35, No. 6, 1189-1195 (1990). Reviewer: M.Gonzalez (Santander) MSC: 47B20 05C20 47B06 05C75 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Math. Japon. 35, No. 6, 1189--1195 (1990; Zbl 0731.47023)
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; Seo, Yuki Graphs and Stampfli’s center of mass. (English) Zbl 0707.05034 Math. Jap. 35, No. 5, 855-860 (1990). MSC: 05C20 47B20 47B07 05C75 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{Y. Seo}, Math. Japon. 35, No. 5, 855--860 (1990; Zbl 0707.05034)
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)
Ando, Tsuyoshi (ed.) [Kubo, Fumio; Tanahashi, Kôtarô; Tomiyama, Jun; Izumino, Saichi; Yamamoto, Yutaka; Yanagi, Kenjiro; Kimura, Hidenori; Iwamoto, Seiichi; Takahashi, Wataru; Kosaki, Hideki; Ando, Tsuyoshi; Fujii, Junichi; Fujii, Masatoshi; Furuta, Takayuki] Operator theory and related topics. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto (Japan), January 11-14, 1988. (Japanese, English) Zbl 0696.47001 RIMS Kokyuroku, 653. Kyoto: Kyoto University, Research Institute for Mathematical Sciences. II, 192 p. (1988). MSC: 47-06 00B25 PDFBibTeX XML
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; Fujii, Masatoshi On operator inequalities due to Ando-Kittaneh-Kosaki. (English) Zbl 0658.47012 Publ. Res. Inst. Math. Sci. 24, No. 2, 295-300 (1988). Reviewer: Th.M.Rassias MSC: 47A30 PDFBibTeX XMLCite \textit{J. I. Fujii} and \textit{M. Fujii}, Publ. Res. Inst. Math. Sci. 24, No. 2, 295--300 (1988; Zbl 0658.47012) Full Text: DOI
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)
Izumino, Saichi (ed.) [Chō, Muneo; Nakamura, Yoshihiro; Kamei, Eizaburo; Goya, Eitoku; Hoshino, Akira; Kato, Yoshinobu; Bhatia, Rajendra; Maeda, Osamu; Ando, Tsuyoshi; Tanahashi, Kôtarô; Fujii, Junichi; Yoshino, Takashi; Takahashi, Katsutoshi; Ôta, Schôichi; Uchiyama, Mitsuru; Fujii, M.; Lin, C.-S.] Linear operator theory. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto, December 4- 7, 1985. (Japanese) Zbl 0643.47001 RIMS Kokyuroku, 582. Kyoto: Kyoto University, Research Institute for Mathematical Sciences. II, 144 p. (1986). MSC: 47-06 47A05 47A10 47B38 00B25 47B40 47A20 47A15 PDFBibTeX XML
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)