Geodesic
Torsion-free Abelian Groups, Valuations and Twisted Group Rings
Canadian mathematical bulletin, Tome 31 (1988) no. 2, pp. 139-146

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Anderson and Ohm have introduced valuations of monoid rings k[Γ] where k is a field and Γ a cancellative torsion-free commutative monoid. We study the residue class fields in question and solve a problem concerning the pure transcendence of the residue fields.
DOI : 10.4153/CMB-1988-021-x
Mots-clés : 13A18, 20K20, 13G05 
Bastos, Gervasio G.; Viswanathan, T. M. Torsion-free Abelian Groups, Valuations and Twisted Group Rings. Canadian mathematical bulletin, Tome 31 (1988) no. 2, pp. 139-146. doi: 10.4153/CMB-1988-021-x
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