Talk:Subsequence

How about we add a more formal definition to this? A sequence X = &lt;x1, x2, x3, ..., xn&gt; is a subsequence of a sequence Y = &lt;y1, y2, y3, ..., ym&gt; iff n <= m and there exists an increasing sequence of numbers &lt;a1, a2, a3, ..., an&gt; such that ya i = xi for all i. --Kentaro 17:57, 22 Apr 2005 (EDT)

Be my guest! =) Larry 18:38, 22 Apr 2005 (EDT)