University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 13 4 2002 12 01 MATRIX VALUATION PSEUDO RING (MVPR) AND AN EXTENSION THEOREM OF MATRIX VALUATION - 31636 EN Journal Article 1970 01 01 Let R be a ring and V be a matrix valuation on R. It is shown that, there exists a correspondence between matrix valuations on R and some special subsets ?(MVPR) of the set of all square matrices over R, analogous to the correspondence between invariant valuation rings and abelian valuation functions on a division ring. Furthermore, based on Malcolmson’s localization, an alternative proof for the following result is presented. “There exists a natural bijection between the matrix valuations on R and valuated epic R-fields.” https://jsciences.ut.ac.ir/article_31636_ab39c39ac6d292df5a2bbb7ac5e0b406.pdf