a = {0, 0, -2,0,2}
b = {   1,  1,1,1}
G0 = ResponseFunction.New( { a, b, mu=0, type="And", name="G0"} )

a = {0,0,0,0}
b = {0.1,0.1,0.1}
Sigma = ResponseFunction.New( { a, b, mu=0, type="Tri", name="Sigma"} )

GHyb = ResponseFunction.CalculateHybridizationFunction(G0,Sigma)

print("The non interacting Green's function")
print(G0)
print("The self energy")
print(Sigma)
print("The bath Green's function defining the hybridization function for the full interacting bath")
print(GHyb)