In order to understand it myself and as a service for the non-German community, in the following posts I will provide the construction of Kneser (for an analytic super logarithm) which he gives in his paper:
Hellmuth Kneser, Reelle analytische Lösungen der Gleichung)=e^x)
und verwandter Funktionalgleichungen. J.Reine Angew. Math. 187, (1949), 56-67
I will proceed in several posts because my time is currently quite limited, and so I will give account of succeeding portions of his construction.
Hellmuth Kneser, Reelle analytische Lösungen der Gleichung
I will proceed in several posts because my time is currently quite limited, and so I will give account of succeeding portions of his construction.