In this paper we characterize idempotent preserving linear operators of upper triangular matrix R-algebra ?_n(R)over commutative integral domain R. We also determine involution preserving linear operators of ?_n(R) and R -algebra antomorphisms of ?_n(R).是什么意思_In this paper we characterize idempotent preserving linear operators of upper triangular matrix R-algebra ?_n(R)over commutative integral domain R. We also determine involution preserving linear operators of ?_n(R) and R -algebra antomorphisms of ?_n(R).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句