A New Operation for Analyzing Series-Parallel Networks
Kent E. Erickson · IRE Transactions on Circuit Theory · 1959
The operation\astis defined asA {\ast} B = AB/A + B. The symbol\asthas algebraic properties which simplify the formal solution of many series-parallel network problems. If the operation\astwere included as a subroutine in a digital computer, it could simplify the programming of certain network calculations.