from pynac import I
i = I
from ring import SR
from constants import (pi, e, NaN, golden_ratio, log2, euler_gamma, catalan,
                       khinchin, twinprime, mertens, glaisher, brun)
from expression import Expression
from callable import CallableSymbolicExpressionRing

from sage.symbolic.relation import solve, solve_mod, solve_ineq
from sage.symbolic.assumptions import assume, forget, assumptions

from units import units
