(I, field)
return a, b, c, d
Convert an open interval to a Mobius transform.
Convert an open interval to a Mobius transform.
Convert an open interval to a Mobius transform .
def _mobius_from_interval(I, field):
    """Convert an open interval to a Mobius transform. """
    s, t = I

    a, c = field.numer(s), field.denom(s)
    b, d = field.numer(t), field.denom(t)

    return a, b, c, d
def _mobius_from_interval ( I , field ) : s , t = I a , c = field . numer ( s ) , field . denom ( s ) b , d = field . numer ( t ) , field . denom ( t ) return a , b , c , d