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math.RA2012
Central units of integral group rings
Eric Jespers, Gabriela Olteanu, Ángel del Río +1
We give an explicit description for a basis of a subgroup of finite index in the group of central units of the integral group ring of a finite abelian-by-supersolvable group…
math.RA2011
Writing units of integral group rings of finite abelian groups as a product of Bass units
Eric Jespers, Ángel del Río, Inneke Van Gelder
We give a constructive proof of the theorem of Bass and Milnor saying that if is a finite abelian group then the Bass units of the integral group ring generate a subgrou…