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One or more new changesets pushed to the primary ufl repository.
A short summary of the last three changesets is included below.

changeset:   861:f733d0a6331df2d2036cfbc23013a4153ed7044a
tag:         tip
user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
date:        Mon Apr 20 15:37:40 2009 +0200
files:       ChangeLog ufl/__init__.py
description:
Added sym to __init__.py


changeset:   860:d04611d0fd63c44012161090de9472dd622673f4
parent:      859:4ecaa8d0455332d0fb4ee77485b454b364c52f73
parent:      858:49c7e289a4f0da699ce6901639dfc5839ddcaf6f
user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
date:        Mon Apr 20 15:16:03 2009 +0200
files:       
description:
merge


changeset:   859:4ecaa8d0455332d0fb4ee77485b454b364c52f73
parent:      857:5502eef050de7250645edf36692c73a334f7e193
user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
date:        Mon Apr 20 15:15:48 2009 +0200
files:       ufl/__init__.py ufl/form.py ufl/formoperators.py ufl/operators.py
description:
Added form operators

  a, L = system(pde) # equivalent to:
  a, L = lhs(pde), rhs(pde)

and

  dL = sensitivity_rhs(a, u, L, v)

to aid in computing sensitivity of solution
function u to a linear system a, L w.r.t.
a variable v (explained in docstring).

Made diff support differentiation of forms
w.r.t. variable, (not to be confused with
differentiation w.r.t. function coefficients).

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For more details, visit http://www.fenics.org/hg/ufl