[1] Domínguez Benavides T. A geometrical coefficient implying the fixed point property and stability results. Houston Journal of
Mathematics, 1996, 22: 835--849
[2] Gao J. Normal Structure and Modulus of U-convexity in Banach Spaces, Function Spaces. Differential Operators and Nonlinear Analysis.
New York: Prometheus Books, 1996: 195--199
[3] Gao J, Saejung S, Normal structure and some geometric parameters related to the modulus of U-convexity in Banach spaces. Acta
Mathematica Scientia, 2011, 31B(3): 1035--1040
[4] Goebel K, Kirk W A. Topics in Metric Fixed Point Theory. Cambridge: Cambridge Univ Press, 1990
[5] Jiao H W, Guo Y R, Wang F H. Modulus of convexity, the coeffcient R(1, X), and normal structure in Banach spaces. Abstr Appl Anal,
2008, 2008: Article ID 135873
[6] Jiménez Melado A, Llorens Fuster E, Saejung S. The von Neumann-Jordan constant, weak orthogonality and normal structure in
Banach spaces. Proc Amer Math Soc, 2006, 134(2): 355--364
[7] Kirk W A. A fixed point theorem for mappings which do not increase distances. Amer Math Monthly, 1965, 72: 1004--1006
[8] Mazcuñán Navarro E M. Banach spaces properties sufficient for normal structure. J Math Anal Appl, 2008, 337: 197--218
[9] Saejung S. On the modulus of U-convexity. Abstr Appl Anal, 2005, 1: 59--66
[10] Saejung S. Sufficient conditions for uniform normal structure of Banach spaces and their duals. J Math Anal Appl, 2007, 330: 597--604
[11] Sims B. Orthogonality and Fixed Points of Nonexpansive Maps. Proc Centre Math Anal Austral Nat Univ. Canberra: Austral Nat Univ,
1988: 178--186
[12] Sims B. A class of spaces with weak normal structure. Bull Austral Math Soc, 1994, 50: 523--528
[13] Yang C S, Wang F H. On a generalized modulus of convexity and uniform normal structure. Acta Mathematica Scientia, 2007, 27B(4)}:
838--844
[14] Zuo Z F, Cui Y A. A note on the modulus of U-convexity and modulus of W^*-convexity. Journal of Inequalities in Pure and Applied
Mathematics, 2008, 9(4): 1--7
[15] Zuo Z F, Cui Y A. Some modulus and normal structure in Banach space. Journal of Inequalities and Applications, 2009, 2009:
Article ID 676373 |