Orlicz space; normal structure
Every Orlicz space equipped with Orlicz norm has weak sum property, therefore, it has weakly normal structure and fixed point property. A criterion of sum property also of normal structure for such spaces is given as well, which shows that every Orlicz space has isonormal structure.
 Wu Congxin, Wang Tingfu, Chen Shutao, Wang Yuwen: Geometry of Orlicz spaces. Harbin, 1986.
 Wu Congxin, Wang Tingfu: Orlicz spaces and their applications. Harbin, 1983.
 Landes T.: Permanence properties of normal structure
. Pacific J. Math. 110, No. 1 (1984), 125-143. MR 0722744
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