Codimension One Discretisations

The deal.II finite element library ( was originally designed to solve partial differential equations defined on one, two or three space dimensions, mostly via the Finite Element Method.In its versions prior to version 6.2, the user could not solve problems defined on curved manifolds embedded in two or three spacial dimensions. This infrastructure is needed if one wants to solve, for example, Boundary Integral Equations, Immersed Boundary Methods, etc.We have contributed to the deal.II library the entire co-dimension one framework, and during the years (from version 8.2 onwards) we extended its capabilities to support geometries coming directly from CAD tools.