16

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 questions on the site, unless they are reliable. Even in this case, it is much preferred if the answer does not depend on the link to be useful, and it is self-...


15

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, books, articles, etc.). If links in a post used only as ...


14

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 licenses prior to Version 4.0 also require you to provide the title of the material if supplied, and may have other slight differences. (copyright, license and ...


13

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 since 2014, possibly because of software revisions in 2015. The Google Groups Planetary Developer forum is similarly moribund. I reached out to Aaron Krowne, one ...


10

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 there is something wrong with it. But I keep the following in mind: For the protection of our users, it's better to make all external links HTTPS instead of ...


10

Click on the share button on the bottom of every post. (There's one in the question you just posted, there is also a separate one the answer I'm writing right now.) If you just want the URL to include in a hyperlink, you can "right click" (or "left" if you are a lefty, command-click or whatever if you use a Mac) and copy the link location from the share ...


9

You can quote by simply using quotation marks. You can write a link in a post or comment like [this](url here), for example google link.


8

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: [ArtOfProblemSolving forum](www.artofproblemsolving.com/Forum/viewtopic.php?p=3542095&sid=61650444d5d??5e56fb5c71a50982e4912#p3542095) which does not work: ArtOfProblemSolving forum. If you ...


8

If the links are simple links then the user has the option of opening in a new tab in any browser which supports tabs. If the links are set to open in a new tab, the user a) doesn't have any advance warning of that; b) doesn't have the ability to override it and force the link to open in the same window. That makes setting links to open in a new tab ...


7

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!


7

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.SE as of last weekend's SEDE update. I've fixed about a dozen of them since then, but they'll still show up in the results until the next weekly update. The ...


6

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 would be (very) annoyed if I would get a new tab/windows every time I clicked an external link. As it is now I can navigate links exclusively using the mouse and ...


6

@AlexR's suggestion can be implemented using \label and \eqref macros in order to get links from within an equation to another equation (but only such links). E.g. $$\sin^2(\theta) + \cos^2(\theta) = 1\tag{1}\label{dpvc-1}$$ and then a link in the text: \eqref{dpvc-1} is due to the Pythagorean theorem, and $$\cos^2(\eta) + \sin^2(\eta)-1 \stackrel{\eqref{...


6

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 work. The link itself only depends on that number, so you can even use https://math.stackexchange.com/questions/3225642/this-can-be-anything-really-it-doesnt-matter, and it would work just fine.


5

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 support for http: protocol, so that many existing URLs here (search url:encyclopediaofmath.org on main site, $346$ results) now redirect to the encyclopediaofmath....


5

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 spreading the edit operation over weeks doing two a day ;). On main, there are fewer links, those will be dealt with manually too.


5

I don't think the block quote formatting is available in comments, but you could also just use quotation marks, "[text]" or «[text]». You could get gray background if preferred by using `[text]`, which would result in [text]. (The rest was answered as I was writing.)


5

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 URL into the post. What will be displayed is the title of the question. This work for posts (questions and answers) yet not for comments. You can also use any ...


4

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 links once you have at least 10 reputation points. See: Privileges - New User Restrictions Don't limit the number of *internal* links new users can include ...


4

From what I can tell, your link contains an "en dash" between Sturm and Liouville, and it is this character that is causing the problem. Replacing it with the ordinary "hyphen-minus" - seems to work: original: http://en.m.wikipedia.org/wiki/Sturm–Liouville_theory hyphen-minus: http://en.m.wikipedia.org/wiki/Sturm-Liouville_theory The same problem appears ...


4

I have used \tag{1}\label{1} and then referred to it with \eqref{1} and \ref{1}. The \tag puts the visual cue, while the \label puts the hyper reference.


4

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 been better, had the asker tried to write the question down. Otherwise, I believe we should either make the images still, or remove them altogether.


4

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 1000 You can of course remove that ID when you don't want to expose your Mathematics Stack Exchange account to whomever you share the link with, or in the rare ...


3

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 TeX input processor options). This means, the change has to occur on the page/site level.


3

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 url page. You do not want to be link displayed like this: https://math.meta.stackexchange.com/questions/28234/how-do-i-link-to-a-question-in-another-question-or-...


3

This is not an answer to the question - it is more of an attempt to show examples how hyperlinks can work. I tried to answer some requests for clarification posted by the OP in the comments. And also this post also contains some experiments with labels of equations and linking to them. I have made the answer community wiki. Feel free to edit it and add ...


3

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: How can I link to a specific answer? Still, it might be useful to add some more details. (Some of the points explained below apply to links to questions as well.)...


Only top voted, non community-wiki answers of a minimum length are eligible