Mathematics, 07.12.2019 00:31 Amber423

Show that every sequence of n2 + 1 distinct real numbers contains a subsequence of length n + 1 that is either strictly increasing or strictly decreasing.
prove or disprove that every sequence of 9 distinct real numbers contains a subsequence of length 4 that is either strictly increasing or strictly decreasing.

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Show that every sequence of n2 + 1 distinct real numbers contains a subsequence of length n + 1 that...