CoCalc
Sharedsupport / 2014-10-30-101241-value-error-ode.sagewsOpen in CoCalc

Examples for support purposes...

var('s','t','T')
A=matrix(A_elements_dict);

f=A(s=t/T)

reset('i');
reset('x');

def Sch(t,y):
    return [ -i*sum(f[j,k]*y[j] for k in range(2^L)) for j in range(2^L)]

NL1=[1 for i in range(2^L)];

TS=ode_solver()
TS.algorithm = "rk4"
TS.function=Sch
TS.y_0 = NL1
TS.ode_solve(t_span=[0,T], num_points=100)
print TS.solution;
(s, t, T)
Error in lines 2-2 Traceback (most recent call last): File "/projects/4a5f0542-5873-4eed-a85c-a18c706e8bcd/.sagemathcloud/sage_server.py", line 864, in execute exec compile(block+'\n', '', 'single') in namespace, locals File "", line 1, in <module> NameError: name 'A_elements_dict' is not defined