Talk:Lists of vector identities

Thanks. I've been trying to learn TeX and this is how I'm doing it. I know some purists might not appreciate that.

People don't know what this is just by looking at it. A couple sentences exposition would help.-LtNOWIS 04:44, 6 Apr 2005 (UTC)

I changed Green's first identity because the notation was incorrect. All these are the same:

$$ \left( {\vec \nabla {\rm f} \cdot \vec \nabla {\rm f}} \right) = \left[ {\frac,\frac,\frac} \right] \cdot \left[ {\frac,\frac,\frac} \right] = \left( {\frac} \right)^2 + \left( {\frac} \right)^2  + \left( {\frac} \right)^2  = \left\| {\vec \nabla {\rm f}} \right\|^2 $$

but

$$ \left( {\vec \nabla {\rm f}} \right)^2 $$

doesn't exist, and

$$ \vec \nabla {\rm f}^2 = \left[ {\frac,\frac,\frac} \right] = 2f\left[ {\frac,\frac,\frac} \right] = 2f\vec \nabla {\rm f} $$

is something completely different. Joaoliveira 31-aug-2006 20:00 UTC

Changed back the 2nd cross in but I'm still not convinced it's correct, can't find a source for it anywhere else. Badgerific (talk) 14:41, 3 March 2009 (UTC)
 * $$\nabla\times (\vec{A}\times\vec{B})= \vec{A} \times (\nabla\times\vec{B}) - \vec{B} \times (\nabla\times\vec{A}) - (\vec{A}\times\nabla) \times \vec{B} + (\vec{B}\times\nabla) \times \vec{A} $$

Hello ... I have extended the article "Vector calculus identities" by adding a few more identities. Now, I think this article is subset of the other article!. So, I would like to suggest to delete(or something equivalent) the article "List of vector identities". If anybody has objection, please let us discuss. zinka 09:29, 5 May 2010 (UTC)