Dieses Buch ist in erster Linie als ein Beitrag zur phanomenologi schen Aufklarung der mathematischen Erkenntnis gedacht. Pha nomenologie als Methode kann nur im handanlegenden Bearbei ten von Bewusstseinsleistungen ihre Angemessenheit und ihre Lei stung erweisen. Weiterhin ist eine phanomenologische Klarung der Moglichkeit der Erkenntnis in Mathematik und Logik nahelie gend, weil es deren Erkenntnisprobleme waren, die Husserl zur Philosophie und schliesslich zur Phanomenologie gefuhrt haben. Will man sich bei diesem Vorhaben an der phanomenologischen Methode orientieren, so kann eine...

The second Erice course in the school of Particle-Astrophysics was held in May, 1988. The topic choosen was Dark Matter. This is one of the most exciting top- ics at the interface of particle physics and astrophysics. It is developing rapidly now due to a coming together not only of the theoretical concepts from the early universe with the theoretical concepts of galaxy formation, but also the coming to- gether of the theorists, experimentalists and observers. It is with Dark Matter, the combined interrelated topics of galaxy formation and the generation of large scale structure that we see a...

Probably more than any other element, iron markedly influences the chemical and physical properties of soils and sediments in the earth. Considering its transition metal status, with potential variation in electronic configuration, ionic radius, and magnetic moment, combined with its abundance and relatively large mass, little wonder that one sees its unique influence on every hand. Pre sentations at the NATO Advanced Study Institute (NATO AS ) on Iron in Soils and Clay Minerals reviewed and discussed the occurrence, behavior, and properties of Fe-bearing minerals found in soils and in the...