What I want in fact is to do the plot in 3D that you can see by looking at the image I have insert (Gauss Fct 3D with Plane.png). The important part of the plot is to reproduce the grid of the xz plane and yz plane with the plot in bue and orange. That is what I would like to do when I plot the gaussian fct exp(-(x^2+y^2)). Can it be done?

Thank you in advance. If it is not possible, I will ask for that in the beta forum.

Mario

So I want to create gamma matrices like this one:

and the four Pauli matrices. So how can I create this one if I have defined the identity matrix (2X2) and the zero matrix(2X2).

 I have tried this:

with(LinearAlgebra);
ga_zero := matrix(4, 4, [ZeroMatrix(2), IdentityMatrix(2), -IdentityMatrix(2), ZeroMatrix(2)]);

Which, of course, did not work. I knew it from the start. But I am wondering how to do it.

Thank you in advance for your help

Mario

I want to load some specific constants at the beginning of my document. I load the ScientificConstants package first. Then I use a list of names of the constants I need. But the assignation in the loop does not work. Only the value and the units appear in the list, but they are not assigned to the letter. See the document included for more details.   Using_the_constants_.mw

Thank you in advance for your help

Mario

The_Bohrs_Model_-_MaplePrimes.mw

Look at the equation (11) in the Maple's document. I would like to force Maple to let the variable "r" inside the squared root so to get the equation (12). Any idea of doing that?  Thank you in advance for your help.

restart;

with(Physics);
with(Vectors);

Given

Ket(i) = alpha*Ket(u) + beta*Ket(d);
Ket(o) = gamma*Ket(u) + delta*Ket(d);
and using

<o|u><u|o> =1/(2)
<o|d><d|o> =1/(2)

 <i|d><d|i> =1/(2);
 <i|u><i|o> =1/(2);

Prove that
                     "alpha^*alpha = 1/2"

and the same for the rest of the unknowns

If you could help me start using them because later I will have a lot to check.

Thank you in advance for your help.

Mario