Skip to main content

Timeline for Convergence of a sequence

Current License: CC BY-SA 4.0

8 events
when toggle format what by license comment
Oct 12, 2022 at 5:53 answer added Alapan Das timeline score: 1
Oct 12, 2022 at 5:34 history became hot network question
Oct 12, 2022 at 3:50 vote accept Jean Legall
Oct 12, 2022 at 1:38 answer added Saúl RM timeline score: 7
Oct 11, 2022 at 22:16 comment added Jean Legall Thanks for your reply. In this case what additional assumption should be made on $a_k$? Like if I know $a_k$ is always very small, e.g., $a_k<0.1$?
Oct 11, 2022 at 21:58 comment added Saúl RM Even if $x_k$ is defined for all $k$, you can find $a_0$ so that $x_1$ is slightly less than $\frac{1}{2}$ and then adjust $a_k$ so that $x_k=\frac{1}{2}(x_{k-1}+\frac{1}{2})$, so in general this does not converge to $1$
Oct 11, 2022 at 21:48 comment added Christian Remling A more basic problem is that $x_k$ need not even be defined for all $k$ (when $x_{k-1}=0$).
Oct 11, 2022 at 21:34 history asked Jean Legall CC BY-SA 4.0