A method for simulating a circuit includes representing the circuit as a hierarchically arranged set of branches, including a root branch and a plurality of other branches logically organized in a graph. The method further includes arranging the subcircuits from the hierarchically arranged set of branches...http://www.google.de/patents/US7257525?utm_source=gb-gplus-sharePatent US7257525 - Systems and methods for efficiently simulating analog behavior of designs having hierarchical structure
