This function returns the parallel connection of two given matroids M and N (cf. Oxley, Section 7.1). Parallel connection is dual to seriesConnection: namely, the parallel connection of M and N is the dual of the series connection of M* and N*.
It is always assumed that the common basepoint of M and N is the first element in the respective ground sets, i.e. the element with index 0. (To form a parallel connection using a different basepoint, one can first relabel M and/or N.)



The object parallelConnection is a method function.