Geodesic
A Generalization of a Fixed Point Theorem of Reich
Canadian mathematical bulletin, Tome 16 (1973) no. 2, pp. 201-206

Voir la notice de l'article provenant de la source Cambridge University Press

The following theorem is the principal result of this paper. Let (M, d) be a metric space and T a self-mapping of M satisfying the condition for x,y ∊ M 1 where a, b, c, e,f are nonnegative and we set α=a+b+c+e+f. 
Hardy, G. E.; Rogers, T. D. A Generalization of a Fixed Point Theorem of Reich. Canadian mathematical bulletin, Tome 16 (1973) no. 2, pp. 201-206. doi: 10.4153/CMB-1973-036-0
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