ZOU Qun. Problems of “pushdown” and “pullback” on a commutative ring[J]. Journal of nanchang hangkong university(Natural science edition), 2005, 19(2): 7-10.
Citation: ZOU Qun. Problems of “pushdown” and “pullback” on a commutative ring[J]. Journal of nanchang hangkong university(Natural science edition), 2005, 19(2): 7-10.

Problems of “pushdown” and “pullback” on a commutative ring

  • The aim of this paper is based on the conclusions concerning the problems of "pushdown" and "pullback" for an ordering of higher level on a field.We extend them by taking specialization of orderings and the quotient fields of domains on a commutative ring with unit.Moreover,it is shown that all orderings of level ncompatible with a given valuation pair on a commutative ring constitute a closed subset of Rn-SpecK for the C-Rtopology.
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