18 votes
Accepted

Why users are providing expired link?

It is not that they provide expired links: they provide live links, time passes, and the links then expire. This happens very often, and that's why we prefer to avoid depending on links when answering ...
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  • 116k
15 votes

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 ...
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  • 49.9k
14 votes

Regarding giving credit to the source of inspiration of your answer.

Unlike with attribution, where you have to supply the name of the creator and attribution parties, a copyright notice, a license notice, a disclaimer notice, and a link to the material. CC ...
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  • 3,929
14 votes
Accepted

Links down to PlanetMath.org?

This site has the best granularity for recent PlanetMath outages that I found so far. There is a GitHub developer issues page for bug reports on the PlanetMath software, but it has been moribund ...
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  • 35.2k
14 votes

Old Links to PlanetMath have Broken

Because the ideal tool for a job like this, the mass-replacement tool, which can repair posts without bumping them, doesn't work in this case, I have fired up a script (a derivation of the Broken ...
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  • 3,929
11 votes

Domains with dead links

This answer is a community wiki — do not hesitate to edit it if there are things worth adding (correcting, updating). Links which can be corrected in bulk The links containing ...
10 votes

Editing non-SE links with HTTPS?

I'm that user, so let me chime in here. I'm not sure why this process isn't automated like with questions and answers. As a few of my edits were approved by a Stack Exchange employee, I don't think ...
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  • 3,929
8 votes
Accepted

Why doesn't [link description](URL) work for me in the comments?

When I look at the specific comment you linked to, I think that the only problems is that you did not include http:// at the beginning of the link. You wrote this: ...
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8 votes
Accepted

Is this a new feature? Mentioning an user with @ becomes a link to their user ID.

As pointed out in the comments, this is not a new feature. The OP of the linked post has just used Markdown formatting to manually add a link to the profile of the user in question. You can see how ...
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8 votes

Old Links to PlanetMath have Broken

I researched the twenty-four posts that Martin's planetmath.org/sites query finds. One post has three such links (the rest have one apiece), and one linked URL is shared by two posts, but two dozen ...
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  • 35.2k
7 votes
Accepted

Can a question's colour or background be changed if I have visited it?

Visited links are now a lighter shade of blue than both the unvisited and hover colors. Thanks for your patience and for bringing this to our attention!
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  • 147
7 votes

Auto-detecting dead links within the Stack Exchange network

I don't know if a bot is needed, but I did write a query on the SE Data Explorer that finds links to deleted posts on other SE sites. As the screenshot shows, there were 343 such broken links on math....
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6 votes

Why do links not open in new tab?

It has already been pointed out in the comment that a similar suggestion from 2009 was declined. That said, I disagree with the proposal because I believe that should be handled in the browser. I ...
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  • 41.4k
6 votes
Accepted

Edit of headline caused URL to break?

You have put a in the middle of the question identifier (that number after /questions/ in the URL), which is why the link didn't ...
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  • 370k
6 votes

Suggestion to mass-replace links to http://math.uga.edu/~pete

Let us collect in this community wiki answer the posts which might need manual editing after the bulk conversion is done. Links which are dead both now and after the transformation The links to the ...
5 votes
Accepted

How do I create a link to a MSE post? Please provide detail.

How does the following change if I want to reference a posted Math Stack Exchange question or page? If you want to reference a Math Stack Exchange question in a post it suffices to paste the ...
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  • 40.8k
5 votes

Questions with broken links

Rather than start a new thread, I'm going to try repurposing this older one as a catalog for reporting medium to large breakage of existing URLs. Apparently Encyclopedia of Math has switched off ...
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  • 35.2k
5 votes

Update meta.MO links

Since there weren't that many links, I've gone through them manually and fixed what the searches turned up here on meta (flooding the front page, but I thought that would be less annoying than ...
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4 votes
Accepted

Number of links in the question

Users with less than 10 reputations points are restricted to at most two links outside SE network. As far as I know, there is no limit for internal links. Similarly, there is no limit on number of ...
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4 votes
Accepted

How do I copy weblinks to answers?

From what I can tell, your link contains an "en dash" between Sturm and Liouville, and it is this character that is causing the ...
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  • 49.9k
4 votes

How to label equations on the left with mathjax?

I have used \tag{1}\label{1} and then referred to it with \eqref{1} and \ref{1}. The ...
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  • 326k
4 votes
Accepted

Sharing MSE posts in other posts

Your user ID is there to keep track of how many users visit a link thanks to you sharing it; there is a series of badges for that, namely Announcer for 25 unique visits Booster for 300 Publicist for ...
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  • 3,929
4 votes

Animated GIFs in questions

In the rare cases where a GIF aids the post’s comprehensibility better than a still image could, then the GIF should remain. I’d argue your question is an example of this, although MathJax would’ve ...
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  • 3,999
3 votes
Accepted

How do I cite some specific section of wiki but not the whole page?

Click the link in Wikipedia's table of contents. This will change the URL in your web browser to something like https://en.wikipedia.org/wiki/MathJax#Features. Use this link with the ...
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  • 25.4k
3 votes

How to label equations on the left with mathjax?

To copy this from my earlier comment. Generally speaking, this can be done. However, it's only possible by changing the MathJax configuration (cf. TagSide in the ...
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3 votes

How do I link to a question in another question or in comments section?

It seems that you are asking two different things: How to format links to a comment? ...that only displays correctly when I create a new question but not in the comments where it is shown as an ...
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3 votes

Distinguishing between questions and answers in references.

As mentioned in another answer, you can get link to specific answer by clicking on "share" just below the answer. Here is a link to a post on Meta Stack Exchange, which also shows some screenshots: ...
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Only top scored, non community-wiki answers of a minimum length are eligible