def is_equiv(self, *objs):
        """Try to derive if given objects are equivalent, return true
        if so, or false otherwise.
        """
        inds = [self._get_ind(x) for x in objs]
        ind = max(inds)
        if ind != -1:
            return all(i == ind for i in inds)
        else:
            return all([x == objs[0] for x in objs])
Try to derive if given objects are equivalent, return true
        if so, or false otherwise.
        
numba/parfors/array_analysis.py