Issue 1139: Description and Differentiation of vector, tensor, and
multivector fields.
http://code.google.com/p/sympy/issues/detail?id=1139
New issue report by [EMAIL PROTECTED]:
As an example consider a vector field (A1,A2,A3) where each of the A's is a
function of (x1,x2,x3). First you would like to declare the A's as
functions of (x1,x2,x3) in the following way. Let x = [x1,x2,x3], a list
of variables and declare the function via A1 = Function('A1',x). The
reason for this is to allow one to automate the declaring of functions so
that if there are many function to declare as functions of the same
variable set [x1,x2,x3] it could be done with a simple loop. For example
in the space time geometric algebra the independent variables are
[x0,x1,x2,x3] and the number of scalar functions needed to describe a
general multivector field are 16. Also one should also be able to suppress
the independent variables when printing the function so that there should
be switch so that print A1 only prints A1 and not A1(x1,x2,x3). Likewise
for example when differentiating A1 with respect to x1, print diff(A1,x1)
should output either d(A1)/dx1 or d(A1(x1,x2,x3))/dx1 depending on how your
output switch is set. Note that this request only applies to the scalar
function coefficients of the field. The use should determine all of the
remaining field chacteristics.
Issue attributes:
Status: Accepted
Owner: [EMAIL PROTECTED]
Labels: Type-Enhancement Priority-Medium
--
You received this message because you are listed in the owner
or CC fields of this issue, or because you starred this issue.
You may adjust your issue notification preferences at:
http://code.google.com/hosting/settings
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"sympy-issues" group.
To post to this group, send email to sympy-issues@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/sympy-issues?hl=en
-~----------~----~----~----~------~----~------~--~---
