DOLFIN is the Python and C++ interface of the FEniCS project for the automated solution of differential equations, providing a consistent PSE (Problem Solving Environment) for solving ordinary and partial differential equations. Key features include a simple, consistent and intuitive object-oriented API; automatic and efficient evaluation of variational forms; automatic and efficient assembly of linear systems; and support for general families of finite elements.

This is the next-generation version of libdolfinx-dev (DOLFIN-X). The legacy version of DOLFIN is provided by python3-dolfin.

This is a base package depending on the dolfinx packages with real or complex number support. By default the version built against the preferred version of PETSc in /usr/lib/petsc is selected, but the alternative version can be selected by setting the environment variable PETSC_DIR.