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[Anders Logg <logg@xxxxxxxxx>]

On Sat, Apr 25, 2009 at 03:42:56PM +0100, Garth N. Wells wrote:
> On Apr 25 2009, kent-and@xxxxxxxxx wrote:
>
>>> On Sat, Apr 25, 2009 at 03:10:07PM +0100, Garth N. Wells wrote:
>>>> On Apr 25 2009, Anders Logg wrote:
>>>>
>>>>> On Sat, Apr 25, 2009 at 11:40:35AM +0200, Martin Sandve Alnæs wrote:
>>>>>> I've verified the curl vs wikipedia and defined rot as the z-component
>>>>>> of the curl of the 2D vector operand embedded in 3D. Is that right?
>>>>>>
>>>>
>>>> rot is just a synonym for curl. For simplicity, I would remove rot.
>>>
>>> I'm used to the following notation (in pseudo-math):
>>>
>>>   rot:  R^2 --> R
>>>   curl: R   --> R^2
>>>   curl: R^3 --> R^3
>>>
>>
>> Agree.
>>
>
> Must be a Scandinavian thing. All the references I'm finding on the net 
> say that curl and rot are the same.

Take a look at this, page 27:

  http://www.ima.umn.edu/~arnold/papers/acta.pdf

Ragnar Winther may be Norwegian, but not Doug Arnold and Richard Falk. :-)

-- 
Anders

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