He further notices that a technique has already been known in Mediaeval Europe whereby textual content of an arbitrary tune can be recorded basing on the recurrence relation , where  , yielding the value of the big-Oh constant c equal to 2. However it turns out that another culture achieved the absolute lower bound of O(0).
He also recognizes a technique in Medieval Europe where the textual content of an arbitrary tune can be documented using a recurrence relation , which yields a big-Oh constant c of 2. Nevertheless, it turns out that another civilization reached the absolute lower bound of O(0).