This  case can be given a cubical geometric interpretation (or a graph-theoretic interpretation) as follows: when moving along the edge from  to , XOR up the functions of the two end-vertices of the edge in order to obtain the coefficient of .
The problem can be reinterpreted using a cubic geometric approach or graph theory, where moving along the edge from  to  involves combining the endpoint functions through an exclusive OR (XOR) operation to determine the desired coefficient.