def __matmul__(self, other):
    from .ot_transformations import lagrangeMult
    ll = lagrangeMult(other, self.c0, self)
    return ((self._f * other) + ll)
def __matmul__(self, other):
    from .ot_transformations import lagrangeMult
    ll = lagrangeMult(other, self.c0, self)
    return ((self._f * other) + ll)