################################
# Diagram information
################################

name = "A4"

edges = [[1, 4], [1, 2], [2, 3], [3, 4]]
nodes = [1, 2, 3, 4]
internal_masses = [0, 0, 0, 0]
external_masses = [0, 0, 0, 0]

U = x[1] + x[2] + x[3] + x[4]
F = s*x[1]*x[3] + t*x[2]*x[4]
parameters = [s, t]
variables = [x[1], x[2], x[3], x[4]]

χ_generic = 3
f_vector = [6, 15, 18, 9]

################################
# Component 1
################################

D[1] = s
χ[1] = 1
weights[1] = [[-2, -1, -2, -1]]
computed_with[1] = ["PLD_sym"]

################################
# Component 2
################################

D[2] = s + t
χ[2] = 2
weights[2] = [[0, 0, 0, 0]]
computed_with[2] = ["PLD_sym", "HyperInt"]

################################
# Component 3
################################

D[3] = t
χ[3] = 1
weights[3] = [[-1, -2, -1, -2]]
computed_with[3] = ["PLD_sym"]