Looks neat. I will have to delve into it more. Thanks!
On 01/16/2016 06:37 PM, brombo wrote:
You may want to look at my geometric algebra module that uses sympy
(github.com/brombo/galgebra) and see if it does what you want it to.
I have attached the manual (galgebra.pdf) for you to look at.
On Friday, January 15, 2016 at 11:04:20 AM UTC-5, Alexander Lindsay
wrote:
Hi all,
I'm pretty new to sympy. I'm wondering whether it's possible to
manipulate expressions with vector dot products without sympy
trying to actually evaluate the dot product. Let's say A and B are
vectors; I want the expression A * B to simply be A * B, not a1*b1
+ a2*b2 + a3*b3. I can't simply use:
A, B = symbols('A B')
and carry them around in expressions that way because I want to
*avoid* simplifications like (C is another vector): A * B / (A *
C) = B / C
My full expressions contain many scalars as well as dot products;
I want to allow scalar simplification, e.g. I *want* x*y / x*z = y
/ z, while avoiding incorrect vector simplifications like the
possibility above.
I hope that this is not too strange or stupid of a question!
Alex
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