naming conventions of base forms and vectors

[krastano...@gmail.com]

I am asking for feedback on your preferences for a naming convention:
How would you like to name (**not** print) the basis vectors (d/dx,
d/dy) and the basis forms (dx, dy).

For the forms I suppose it is clear: dx and dy (dr, dtheta, etc). And
printing them will give the same thing (in pprint unicode, latex,
etc).

Here vectors mean directional derivative operators:
However base vectors are a bit less obvious. In latex they will be
\frac{\part}{\part x}, as in pprint unicode, however how to print/name
them in simple python ascii?

`d_dx` or `e_x` or `X` or `u_x` or `vx` ...?

I prefer `d_dx` for the moment. `e_x` and `u_x` are not that bad too.
I dislike `X` as it is too close to `x` which is the coordinate
function.

For the moment I will proceed with `d_dx`. Any changes will happen in
future pull requests.

[Comer]

Hi Stefan,

I vote for  ' e_x' .  For me, d_dx is too reminiscent of derivative with respect to x.  But hey, it is probably not that important assuming one gets used to the notation.

Comer

[Alan Bromborsky]

I have attached the current rewrite of the Geometric Algebra module.
You might wish to unpack it and look at the documentation
(GA/docs/_build/html/GA.html for some ideas since the geometric calculus
and differential geometry are related. I would suggest looking at the
different sections (definitions and implementations) on
differentiation. Because of the gmail attachment filter GA.zip was
renamed GA.bip.

[krastano...@gmail.com]

Thanks for the feedback. I will probably use `e_x` for the naming.

And thanks for the attachment. I will definitely check it out for more ideas.