Interconnected cycles

[zchmielewska]

As in email by MK

[zchmielewska]

@variable()
def a(t):
    if t == 0:
        return 0
    else:
        return b(t - 1)

@variable()
def b(t):
    return a(t) - y(t) - x(t)

@variable()
def x(t):
    return a(t)

@variable()
def y(t):
    return a(t)

[zchmielewska]