×
Author ID: mitani.kenichi Recent zbMATH articles by "Mitani, Kenichi"
Published as: Mitani, Ken-Ichi; Mitani, Ken-ichi; Mitani, Kenichi
Documents Indexed: 44 Publications since 2003
Co-Authors: 16 Co-Authors with 42 Joint Publications
117 Co-Co-Authors

Publications by Year

Citations contained in zbMATH Open

25 Publications have been cited 102 times in 51 Documents Cited by Year
Smoothness of absolute norms on \(\mathbb C^n\). Zbl 1029.46011
Mitani, Ken-Ichi; Saito, Kichi-Suke; Suzuki, Tomonari
16
2003
The James constant of absolute norms on \(\mathbb R^2\). Zbl 1051.46008
Mitani, Ken-ichi; Saito, Kichi-Suke
13
2003
Smoothness of \(\psi\)-direct sums of Banach spaces. Zbl 1084.46012
Mitani, Kenichi; Oshiro, Satoru; Saito, Kichi-Suke
11
2005
Dual of two dimensional Lorentz sequence spaces. Zbl 1184.46018
Mitani, Ken-Ichi; Saito, Kichi-Suke
11
2009
On sharp triangle inequalities in Banach spaces. Zbl 1127.46015
Mitani, Ken-Ichi; Saito, Kichi-Suke; Kato, Mikio; Tamura, Takayuki
7
2007
Extremal structure of the set of absolute norms on \(\mathbb R^2\) and the von Neumann-Jordan constant. Zbl 1204.46008
Komuro, Naoto; Saito, Kichi-Suke; Mitani, Ken-Ichi
6
2010
On the calculation of the James constant of Lorentz sequence spaces. Zbl 1148.46013
Mitani, Ken-Ichi; Saito, Kichi-Suke; Suzuki, Tomonari
6
2008
On sharp triangle inequalities in Banach spaces. II. Zbl 1195.46021
Mitani, Ken-Ichi; Saito, Kichi-Suke
5
2010
Another approach to characterizations of generalized triangle inequalities in normed spaces. Zbl 1311.46014
Izumida, Tamotsu; Mitani, Ken-Ichi; Saito, Kichi-Suke
4
2014
A comparison between James and von Neumann-Jordan constants. Zbl 1384.46011
Komuro, Naoto; Mitani, Ken-Ichi; Saito, Kichi-Suke; Tanaka, Ryotaro; Tomizawa, Yukino
3
2017
A note on geometrical properties of Banach spaces using \(\psi\)-direct sums. Zbl 1109.46017
Mitani, Ken-Ichi; Saito, Kichi-Suke
2
2007
Geometric constants of \(\pi/2\)-rotation invariant norms on \(\mathbb{R}^{2}\). Zbl 1378.46016
Tomizawa, Yukino; Mitani, Ken-Ichi; Saito, Kichi-Suke; Tanaka, Ryotaro
2
2017
Extremal structure of absolute normalized norms on \(\mathbb R^2\) and the James constant. Zbl 1227.15020
Komuro, Naoto; Saito, Kichi-Suke; Mitani, Ken-Ichi
2
2011
Skewness and James constant of Banach spaces. Zbl 1271.46016
Mitani, Ken-Ichi; Saito, Kichi-Suke; Takahashi, Yasuji
2
2013
On the von Neumann-Jordan constant of generalized Banas-Fraczek spaces. Zbl 1424.46018
Mitani, Ken-Ichi; Saito, Kichi-Suke; Takahashi, Yasuji
2
2016
On the James constants of two-dimensional Lorentz sequence spaces and its dual. Zbl 1346.46014
Mitani, Ken-Ichi; Saito, Kichi-Suke; Tanaka, Ryotaro
1
2015
Extremal structure of absolute norms and the skewness. Zbl 1342.46016
Mitani, Ken-Ichi; Saito, Kichi-Suke; Komuro, Naoto
1
2015
On sharp triangle inequalities in Banach spaces and their applications. Zbl 1294.46012
Saito, Kichi-Suke; Mitani, Ken-Ichi
1
2011
How to calculate James constants of Banach spaces. Zbl 1338.46022
Saito, Kichi-Suke; Komuro, Naoto; Mitani, Ken-Ichi
1
2014
The monotonicity of absolute normalized norms on \(\mathbb{C}^n\). Zbl 1250.46013
Komuro, Naoto; Mitani, Ken-Ichi; Saito, Kichi-Suke
1
2011
A new geometrical constant of Banach spaces and the uniform normal structure. Zbl 1245.46009
Mitani, Ken-ichi; Saito, Kichi-Suke
1
2009
On the James constant of extreme absolute norms on \(\mathbb{R}^2\) and their dual norms. Zbl 1441.46016
Komuro, Naoto; Saito, Kichi-suke; Mitani, Ken-ichi
1
2013
A note on relations between skewness and geometrical constants of Banach spaces. Zbl 1493.46029
Mitani, Ken-Ichi; Saito, Kichi-Suke
1
2021
U-convexity of \(\psi \)-direct sums of Banach spaces. Zbl 1204.46009
Mitani, Ken-Ichi
1
2010
Another aspect of triangle inequality. Zbl 1217.26061
Saito, Kichi-Suke; An, Runling; Mizuguchi, Hiroyasu; Mitani, Ken-Ichi
1
2011
A note on relations between skewness and geometrical constants of Banach spaces. Zbl 1493.46029
Mitani, Ken-Ichi; Saito, Kichi-Suke
1
2021
A comparison between James and von Neumann-Jordan constants. Zbl 1384.46011
Komuro, Naoto; Mitani, Ken-Ichi; Saito, Kichi-Suke; Tanaka, Ryotaro; Tomizawa, Yukino
3
2017
Geometric constants of \(\pi/2\)-rotation invariant norms on \(\mathbb{R}^{2}\). Zbl 1378.46016
Tomizawa, Yukino; Mitani, Ken-Ichi; Saito, Kichi-Suke; Tanaka, Ryotaro
2
2017
On the von Neumann-Jordan constant of generalized Banas-Fraczek spaces. Zbl 1424.46018
Mitani, Ken-Ichi; Saito, Kichi-Suke; Takahashi, Yasuji
2
2016
On the James constants of two-dimensional Lorentz sequence spaces and its dual. Zbl 1346.46014
Mitani, Ken-Ichi; Saito, Kichi-Suke; Tanaka, Ryotaro
1
2015
Extremal structure of absolute norms and the skewness. Zbl 1342.46016
Mitani, Ken-Ichi; Saito, Kichi-Suke; Komuro, Naoto
1
2015
Another approach to characterizations of generalized triangle inequalities in normed spaces. Zbl 1311.46014
Izumida, Tamotsu; Mitani, Ken-Ichi; Saito, Kichi-Suke
4
2014
How to calculate James constants of Banach spaces. Zbl 1338.46022
Saito, Kichi-Suke; Komuro, Naoto; Mitani, Ken-Ichi
1
2014
Skewness and James constant of Banach spaces. Zbl 1271.46016
Mitani, Ken-Ichi; Saito, Kichi-Suke; Takahashi, Yasuji
2
2013
On the James constant of extreme absolute norms on \(\mathbb{R}^2\) and their dual norms. Zbl 1441.46016
Komuro, Naoto; Saito, Kichi-suke; Mitani, Ken-ichi
1
2013
Extremal structure of absolute normalized norms on \(\mathbb R^2\) and the James constant. Zbl 1227.15020
Komuro, Naoto; Saito, Kichi-Suke; Mitani, Ken-Ichi
2
2011
On sharp triangle inequalities in Banach spaces and their applications. Zbl 1294.46012
Saito, Kichi-Suke; Mitani, Ken-Ichi
1
2011
The monotonicity of absolute normalized norms on \(\mathbb{C}^n\). Zbl 1250.46013
Komuro, Naoto; Mitani, Ken-Ichi; Saito, Kichi-Suke
1
2011
Another aspect of triangle inequality. Zbl 1217.26061
Saito, Kichi-Suke; An, Runling; Mizuguchi, Hiroyasu; Mitani, Ken-Ichi
1
2011
Extremal structure of the set of absolute norms on \(\mathbb R^2\) and the von Neumann-Jordan constant. Zbl 1204.46008
Komuro, Naoto; Saito, Kichi-Suke; Mitani, Ken-Ichi
6
2010
On sharp triangle inequalities in Banach spaces. II. Zbl 1195.46021
Mitani, Ken-Ichi; Saito, Kichi-Suke
5
2010
U-convexity of \(\psi \)-direct sums of Banach spaces. Zbl 1204.46009
Mitani, Ken-Ichi
1
2010
Dual of two dimensional Lorentz sequence spaces. Zbl 1184.46018
Mitani, Ken-Ichi; Saito, Kichi-Suke
11
2009
A new geometrical constant of Banach spaces and the uniform normal structure. Zbl 1245.46009
Mitani, Ken-ichi; Saito, Kichi-Suke
1
2009
On the calculation of the James constant of Lorentz sequence spaces. Zbl 1148.46013
Mitani, Ken-Ichi; Saito, Kichi-Suke; Suzuki, Tomonari
6
2008
On sharp triangle inequalities in Banach spaces. Zbl 1127.46015
Mitani, Ken-Ichi; Saito, Kichi-Suke; Kato, Mikio; Tamura, Takayuki
7
2007
A note on geometrical properties of Banach spaces using \(\psi\)-direct sums. Zbl 1109.46017
Mitani, Ken-Ichi; Saito, Kichi-Suke
2
2007
Smoothness of \(\psi\)-direct sums of Banach spaces. Zbl 1084.46012
Mitani, Kenichi; Oshiro, Satoru; Saito, Kichi-Suke
11
2005
Smoothness of absolute norms on \(\mathbb C^n\). Zbl 1029.46011
Mitani, Ken-Ichi; Saito, Kichi-Suke; Suzuki, Tomonari
16
2003
The James constant of absolute norms on \(\mathbb R^2\). Zbl 1051.46008
Mitani, Ken-ichi; Saito, Kichi-Suke
13
2003

Citations by Year