  \pkg{multiplex} is a computer program that provides algebraic tools for the
analysis of multiple network structures within the \proglang{R} environment.
Apart from the possibility to create and manipulate multivariate data
representing multiplex, signed, and two-mode networks, this package offers a
collection of functions that deal with algebraic systems ---such as the
partially ordered semigroup, and balance or cluster semirings--- their
decomposition, and the enumeration of bundle patterns occurring at different
levels of the network. Moreover, through Galois derivations between families of
the pairs of subsets in different domains it is possible to analyze affiliation
networks with an algebraic approach. Visualization of multigraphs, different
forms of bipartite graphs, inclusion lattices, Cayley graphs is supported as
well with related packages.
