## Characterizations of normal structure.(English)Zbl 0284.47031

### MSC:

 47H10 Fixed-point theorems 46B99 Normed linear spaces and Banach spaces; Banach lattices
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### References:

 [1] L. P. Belluce and W. A. Kirk, Nonexpansive mappings and fixed-points in Banach spaces, Illinois J. Math. 11 (1967), 474 – 479. · Zbl 0149.10702 [2] M. S. Brodskiĭ and D. P. Mil$$^{\prime}$$man, On the center of a convex set, Doklady Akad. Nauk SSSR (N.S.) 59 (1948), 837 – 840 (Russian). [3] A. H. Clifford and G. B. Preston, The algebraic theory of semigroups. Vol. I, Mathematical Surveys, No. 7, American Mathematical Society, Providence, R.I., 1961. · Zbl 0111.03403 [4] Michael Edelstein, The construction of an asymptotic center with a fixed-point property, Bull. Amer. Math. Soc. 78 (1972), 206 – 208. · Zbl 0231.47029 [5] -, Fixed point theorems in uniformly convex Banach spaces (to appear). · Zbl 0286.47035 [6] R. D. Holmes and Anthony T. Lau, Non-expansive actions of topological semigroups and fixed points, J. London Math. Soc. (2) 5 (1972), 330 – 336. · Zbl 0248.47029 [7] Teck Cheong Lim, A fixed point theorem for families on nonexpansive mappings, Pacific J. Math. 53 (1974), 487 – 493. · Zbl 0291.47032 [8] Kok Keong Tan, Common fixed point theorems for almost weakly periodic nonexpansive mappings, Proc. Amer. Math. Soc. 33 (1972), 355 – 360. · Zbl 0233.54030
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