Diagonal-preserving of 
-algebras
We show that any 
-isomorphism 
which maps 
onto 
is in fact diagonal-preserving under mild conditions on 
and 
.
Affiliation: Faculty of Mathematics, College of Science, Farhangian University, Tehran, Iran
Diagonal-preserving of -algebras
We show that any -isomorphism which maps onto is in fact diagonal-preserving under mild conditions on and .
Affiliation: Faculty of Mathematics, College of Science, Farhangian University, Tehran, Iran