Continued Operation Notation for Symbol Manipulation and Array Processing A brief account is given of a notational device that is very useful in the formal representation of syntaxes, string relationships and string transformation procedures and also of computing procedures that deal with arrays of functions of many variables. The device consists of the use of certain "continued operation" or "collective" symbols that are analogous to the summation symbol (Sigma) and continued multiplication symbol (Pi) of conventional mathematics. CACM August, 1963 Barnett, M. P. CA630839 JB March 13, 1978 8:02 PM 1062 4 759 1121 4 759 1139 4 759 1265 4 759 1781 4 759 720 4 759 759 4 759 964 5 759 1121 5 759 464 5 759 659 5 759 759 5 759 759 5 759 759 5 759 284 6 759 464 6 759 561 6 759 759 6 759 759 6 759 759 6 759