Hacker News: dmehrlehttps://news.ycombinator.com/user?id=dmehrleHacker News RSShttps://hnrss.org/hnrss v2.1.1Wed, 23 Sep 2026 06:55:00 +0000<![CDATA[New comment by dmehrle in "Erdős Problem #1026"]]>Subsequences need not be contiguous. In your example, taking every other number gives the desired monotone subsequence.

]]>Tue, 16 Dec 2025 13:17:18 +0000https://news.ycombinator.com/item?id=46288139dmehrlehttps://news.ycombinator.com/item?id=46288139https://news.ycombinator.com/item?id=46288139