Falcidieno, BiancaRatto, Ornella2014-10-212014-10-2119921467-8659https://doi.org/10.1111/1467-8659.1130391This paper discusses the relationships studied between manifold solids and r-sets by defining an r-set as a decomposition in two-manifold cells. This decomposition is represented as a graph (Two-manifold Cell Decomposition graph TCD) in which each node corresponds to a 2 manifold component of the regular set, while each arc or hyperarc defines a non-manifold adjacency between components. The TCD model and data structure encoding it were designed in order to be compatible with a traditional boundary architecture.10.1111/1467-8659.1130391391-404