Skip to main content

Timeline for Convergence of distance

Current License: CC BY-SA 4.0

23 events
when toggle format what by license comment
Mar 29 at 21:34 comment added Star Also, it must be that for $L_n=L>0$, $C_n(L)$ tends to a superset of $A$... This is by definition.
Mar 29 at 21:26 comment added Star there is no rule on how many questions I can ask. You are free not to reply.
Mar 29 at 21:22 history bounty ended Star
Mar 29 at 21:22 vote accept Star
Mar 29 at 20:25 comment added Iosif Pinelis Previous comment continued: Your additional requests keep ignoring that and concern things that cannot possibly make a substantial difference.
Mar 29 at 20:23 comment added Iosif Pinelis @Star : No, I don' t think so. You actually seem to go in the wrong direction with the constant $L$. Anyhow, didn't we agree that, as your question had already been fully answered (along with a number of extra comments of mine), your last additional request was at Mar 25 at 18:30? Also, let me repeat: "I believe that all this pursuit, without serious structural restrictions on $\ell$ and $u$ (such as a seriously strong version of injectivity) is, unfortunately, fruitless. "
Mar 29 at 20:14 comment added Star The Hausdorff distance, sorry.
Mar 29 at 17:06 comment added Iosif Pinelis "the distance"? What distance?
Mar 29 at 16:48 comment added Star Thanks. I think I'm OK with that. Am I right to say that if $L_n\equiv L>0$, then the distance goes to zero?
Mar 27 at 1:26 comment added Iosif Pinelis @Star : Do you have a further response to this answer?
Mar 26 at 0:16 history edited Iosif Pinelis CC BY-SA 4.0
added 11 characters in body
Mar 26 at 0:10 comment added Iosif Pinelis @Star : This is now done.
Mar 26 at 0:10 history edited Iosif Pinelis CC BY-SA 4.0
added 3 characters in body
Mar 25 at 20:45 comment added Star Yes, please, thanks
Mar 25 at 19:01 comment added Iosif Pinelis @Star : Since your question has already been fully answered (along with a number of extra comments of mine), I will do this modification (which, I believe, does not change anything of essence) if this is the last additional request.
Mar 25 at 18:30 comment added Star If it is not a huge work, could you edit your answer along those lines?
Mar 25 at 18:16 comment added Iosif Pinelis @Star : I did that in order for the counterexample to be simple and specific. However, the counterexample can be easily modified for any positive sequence $(L_n)$ converging to $0$ -- by then letting $p_n:=2L_n$, say. There are a huge number of degrees of freedom in constructing a counterexample under your conditions.
Mar 25 at 17:55 comment added Star But it seems that you have picked a specific $L_n$?
Mar 25 at 17:29 comment added Iosif Pinelis @Star : Essentially, this example shows that, for any positive sequence $(L_n)$ converging to $0$, we can construct $X,\ell,u,(p_n)$ with $d_H(A,C_n(L_n))$ however large or even infinite for all $n$. I believe that all this pursuit, without serious structural restrictions on $\ell$ and $u$ (such as a seriously strong version of injectivity) is, unfortunately, fruitless.
Mar 25 at 17:05 comment added Star Thanks. Is your example showing that there is no $L_n$ that makes the claim true?
Mar 25 at 15:53 history edited Iosif Pinelis CC BY-SA 4.0
added 541 characters in body
Mar 25 at 14:48 history edited Iosif Pinelis CC BY-SA 4.0
added 14 characters in body
Mar 25 at 14:42 history answered Iosif Pinelis CC BY-SA 4.0