def is_homogeneous(f):
"""Returns `True` if `f` has zero trailing coefficient. """
return f.dom.is_zero(dmp_ground_TC(f.rep, f.lev, f.dom))
def TC(f):
"""Returns the trailing coefficent of `f`. """
return dmp_ground_TC(f.rep, f.lev, f.dom)
def is_homogeneous(f):
"""Returns `True` if `f` has zero trailing coefficient. """
return f.dom.is_zero(dmp_ground_TC(f.rep, f.lev, f.dom))
def test_dmp_ground_TC():
assert dmp_ground_TC([[]], 1, ZZ) == 0
assert dmp_ground_TC([[2,3,4],[5]], 1, ZZ) == 5
assert dmp_ground_TC([[[]]], 2, ZZ) == 0
assert dmp_ground_TC([[[2],[3,4]],[[5]]], 2, ZZ) == 5
def TC(f):
"""Returns the trailing coefficent of `f`. """
return dmp_ground_TC(f.rep, f.lev, f.dom)
