UFL

The Unified Form Language (UFL) is a domain specific language for declaration of finite element discretizations of variational forms.

It defines a flexible interface for choosing finite element spaces and defining expressions for weak forms using a language close to mathematical notations.

The form compilers FFC and SyFi use UFL as their end-user interface, producing UFC implementations as their output.

What is new in this release:

• This release contains a few bugfixes and a couple of minor features.

What is new in version 0.9.1:

• The release contains a number of new features, including the permutation symbol and the application of more operators to scalar fields.
• For form compilers, form preprocessing has been improved.

What is new in version 0.4:

• Extensions for ElementRestriction (restrict FiniteElement to Cell)
• Bug fix for lhs/rhs with list tensor types
• Add new log function set_prefix
• Add new log function log(level, message)
• Added macro cell integral *dE
• Added mechanism to add additional integral types
• Added LiftingOperator and LiftingFunction
• Added ElementRestriction