TY - BOOK AU - Knebusch,Manfred AU - Kaiser,Tobias ED - SpringerLink (Online service) TI - Manis Valuations and Prüfer Extensions II T2 - Lecture Notes in Mathematics, SN - 9783319032122 AV - QA251.3 U1 - 512.44 23 PY - 2014/// CY - Cham PB - Springer International Publishing, Imprint: Springer KW - Mathematics KW - Algebra KW - Commutative Rings and Algebras N1 - Overrings and PM-Spectra -- Approximation Theorems -- Kronecker extensions and star operations -- Basics on Manis valuations and Prufer extensions -- Multiplicative ideal theory -- PM-valuations and valuations of weaker type -- Overrings and PM-Spectra -- Approximation Theorems -- Kronecker extensions and star operations -- Appendix -- References -- Index N2 - This volume is a sequel to “Manis Valuation and Prüfer Extensions I,” LNM1791. The Prüfer extensions of a commutative ring A are roughly those commutative ring extensions R / A,where commutative algebra is governed by Manis valuations on R with integral values on A. These valuations then turn out to belong to the particularly amenable subclass of PM (=Prüfer-Manis) valuations. While in Volume I Prüfer extensions in general and individual PM valuations were studied, now the focus is on families of PM valuations. One highlight is the presentation of a very general and deep approximation theorem for PM valuations, going back to Joachim Gräter’s work in 1980, a far-reaching extension of the classical weak approximation theorem in arithmetic. Another highlight is a theory of so called “Kronecker extensions,” where PM valuations are put to use in  arbitrary commutative  ring extensions in a way that ultimately goes back to the work of Leopold Kronecker UR - http://dx.doi.org/10.1007/978-3-319-03212-2 ER -