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So I have successfully written scripts for three different functions of 3 variables, Sum1(x,y,z) Sum2(x,y,z) and Sum3(x,y,z)

I have 2 other scripts for functions of just two of these variables: QuantumDimension(x,y) and Twist(x,y)

I'm trying to relate these functions as so:

function c = CJ(x,y,z)

c = (Twist(x,y)^(-2*z)/QuantumDimension(x,y))*(Sum1(x,y,z)+Sum2(x,y,z)-Sum3(x,y,z))

end

So Twist^(-2z) divided by the QuantumDimension, multipled by the sum of the three summations, (Sum1 + Sum2 + Sum3)

This is the output I get when I try to run the code:

Error in CJ (line 2)

c = (Twist(x,y)^(-2*z)/QuantumDimension(x,y))*(Sum1(x,y,z)+Sum2(x,y,z)-Sum3(x,y,z))

I do not see anything wrong with this line!! Insights appreciate, thanks for being patient.

Rik
on 24 Sep 2020

This should fix it:

function s = Sum1(x,y,z)

s = 0;

for i=0:min(x,y)

for k=0:x-i

s = s + (-1)^k * QuantumDimension(2*x-2*k-2*i, 2*y+k-2*i) * Twist(2*x-2*k-2*i, 2*y+k-2*i)^(z/2);

end

end

end

Rik
on 24 Sep 2020

What do you mean by that? Do you want to provide z at a later time than x and y? Like a lambda? You can probably get most of the way there with an anonymous function.

Note that I didn't make an attempt to simplify or speed up your code, so the current shape of your functions may not allow you to do what you want.

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