FEI Xiuhai, ZHANG Jianhua*
(School of Mathematics and Information Science,Shaanxi Normal University,Xi′an 710119, Shaanxi, China)
Abstract:
The method of decomposing matrix is used.It is shown that every zero point (m,n)-higher derivable map on a |mn(m+n)(m-n)|-torsion free triangular algebra is a higher derivation.As its application,it is proved that every zero point (m,n)-higher derivable map on a nest algebra or a |mn(m+n)(m-n)|-torsion free block upper triangular matrix algebra is a higher derivation.
KeyWords:
triangular algebra; (m,n)-derivation; (m,n)-higher derivation; derivation