Contents: P. Vihan: The Last Month of Gerhard Gentzen in Prague. - F.A. Rodr guez-Consuegra: Some Issues on G del's Unpublished Philosophical Manuscripts. - D.D. Spalt: Vollst ndigkeit als Ziel historischer Explikation. Eine Fallstudie. - E. Engeler: Existenz und Negation in Mathematik und Logik. - W.J. Gutjahr: Paradoxien der Prognose und der Evaluation: Eine fixpunkttheoretische Analyse. - R. H hnle: Automated Deduction and Integer Programming. - M. Baaz, A. Leitsch: Methods of Functional Extension.
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