Franz HalterKoch 

Department of Mathematics  
University of Graz  
A8010 Graz, Austria  
email: franz.halterkoch@unigraz.at 
NonUnique Facorizations in monoids and integral domains
Investigation of invariants of nonunique factorizations for monoids and integral domains. Algebraic, combinatorial and analytic theory (joint work with A. Geroldinger).
Ideal systems on monoids and integral domains, their generalizations
to module systems and the connections with semistar operations. Investigation
of the structure and characterization of classes of monoids and
integral domains defined by idealtheoretic properties.
Representations of integers by binary quadratic forms. Relations with
diophantine equations, continued fractions and the construction of class
fields.
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last changed: March012004