# Gradient, Divergence, Curl and vector products

Are there implementations of vector product and the nabla operator yet? I can't find anything.

Gradient, Divergence, Curl and vector products

**
asked 2013-10-21 12:40:22 +0200 **

Anonymous

Are there implementations of vector product and the nabla operator yet? I can't find anything.

add a comment

3

Sorry for the update - believe it or not, after *years* this was finally implemented (as a method, not function) in Trac 3021.

```
sage: var('y z')
(y, z)
sage: V = vector([x^2*y, z, 3*y^2])sage: V.curl([x,y,z]) # necessary since otherwise why should x be first?
(6*y - 1, 0, -x^2)
sage: V.div() # same reason
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
<snip>
ValueError: Unable to determine ordered variable names for Symbolic Ring
sage: V.div([x,y,z])
2*x*y
```

1

I don't think sage has a curl and divergence defined, but it is very easy to implement them.

Have a look at http://sage.math.canterbury.ac.nz/hom...

Please start posting anonymously - your entry will be published after you log in or create a new account.

Asked: ** 2013-10-21 12:40:22 +0200 **

Seen: **4,046 times**

Last updated: **Nov 20 '15**

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.