Boulevard of Broken Links

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8:56 AM

I found so many web links became invalid on the questions and even more on the comments. Please be aware of this issue. In the future, this site needs to either repair the invalid links or advise users not to use the web links.

You can use the Wayback machine to figure out where the link used to be pointing, then when you find the relevant source, add an updated link. — David White Mar 13 at 17:09

I think this site would be considerably impoverished if people couldn't link, and it's hard to know how the site could automatically repair invalid links. So it's hard for me to see what action this question is suggesting. (In tems of "please be aware of this issue", as @MartinSleziak points out, I think most of the MMO audience probably already is.) — LSpice Mar 18 at 19:48

Something I've begun doing the past few months (but not recently enough for any of my "recent" mathoverflow answers) is to save the page at the Internet Archive, and then use the archived URL (unless a Stack Exchange link, or Wikipedia link, or something else unlikely to go dead in the foreseeable future). Most recently I did this for a link I gave following “Example 3: Evaluate a Mixed Composition of Trig Functions” in this MSE answer. (@Martin Sleziak: In case interested.) — Dave L Renfro 14 hours ago

A: All these invalid weblinks

I think that many people around here are aware of problems with dead links and they do their best to help. (And the same is true about many other sites on the Stack Exchange network.) One thing is that it is recommended to add sufficient information about the referenced paper - so that even if th...

A: What is the maximum and minimum value of the following function?

(from one of my comments) “Of course, the values of the tangent function can be “pushed through” with some work to obtain max/min values of the function (evaluate sine and cosine functions at the inverse-tangent values), $\ldots$” What follows is probably not what the author intended, but I'm pos...

> e.g. see “Example 3: Evaluate a Mixed Composition of Trig Functions” here

1 hour later…

Martin Sleziak

10:25 AM

@DaveLRenfro Your comment reminded me of this old post on Mathematics Meta: Should we try to prevent link rot? — Martin Sleziak 12 secs ago

Q: Should we try to prevent link rot?

Some time ago we had problems with Springer Encyclopedia of Mathematics, although they fixed the links after some time: Link Rot Notice: Springer EOM Now I have noticed that many links to PlanetMath are not working. (The links which have form http://planetmath.org/encyclopedia/....) What can we...

discussion hyperlinks dead-links

A: Should we try to prevent link rot?

I don't think it is necessary to provide backup links in case links eventually rot. (In case the backup links rot, do you need backup links to those, too? And so on.) But what is important is that posts should be intelligible without accessing information at third-party sources (other web-sites, ...

Martin Sleziak

10:45 AM

@Martin Sleziak: It appears I saw your old post at that time, as I have a comment to an answer there. It's strange, but while reading my comment (there) just now, I recall writing it, but I would have guessed I wrote it 2 or 3 years ago, not nearly 9 years ago. — Dave L Renfro 7 mins ago

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