Prove that for any sequence in length of n*m*k+1 of real numbers, exist monotonic increasing sub sequence in length of n+1 or monotonic decreasing sub sequence in length of m+1 or constant sub sequence in length of k+1.
Thank you...
Prove that for any sequence in length of n*m*k+1 of real numbers, exist monotonic increasing sub sequence in length of n+1 or monotonic decreasing sub sequence in length of m+1 or constant sub sequence in length of k+1.
Thank you...