1 paper
Mohammad Ashraf, Mohammad Afajal Ansari, Md Shamim Akhter +1
Let $\U$ be a von Neumann algebra with a projection $P\in \U$. For any $A_1,A_2,\ldots,A_n\in\U,$ define p1(A1)=A1, $p_n (A_1,A_2,\ldots,A_n)=[p_{n-1} (A_1,A_2,\ldots,A_{n-1})…