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Definability and a Nonlinear Sigma Model
Definability Nonlinear Sigma Model Compactification
2008/4/11
The concept of definability of physical fields is introduced and a set-theoretical foundation is proposed. In this foundation, we obtain a scale invariant nonlinear sigma model and then show that qua...
Hartwig Heine, Rüdiger Mautz, Wolf Rosenbaum, Öffnung der Wagenburg? Antworten von Chemiemanagern auf ökologische Kritik, Ed. Sigma, Berlin, 1995, 334 pp. (ISBN: 3-89404-395-4)
Hartwig Heine Chemistry
2008/4/7
Among the sciences, chemistry plays an eminent role in that it has its own traditional industry. The chemical industry is not only the main employer for graduated chemists. Since the public is more aw...