Error for more or less standard variational formulation using two cross products

From the ufl documentation: Form language ā€” Unified Form Language (UFL) 2019.2.0.dev0 documentation

The operator cross accepts as arguments two logically vector-valued expressions and returns a vector which is the cross product (vector product) of the two vectors:

ššŒšš›šš˜ššœššœ(ššŸ,šš )ā†”vƗw=(v1w2āˆ’v2w1,v2w0āˆ’v0w2,v0w1āˆ’v1w0)

Note that this operator is only defined for vectors of length three.

1 Like