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I, today, saw one new thing below my question cite . I pressed it & this appeared:

Example citation:

user36790 (https://physics.stackexchange.com/users/36790/user36790), Why does Hamiltonian follow the property $H^*_{ij} = H_{ji} $?, URL (version: 2015-07-31): Why does Hamiltonian follow the property $H^*_{ij} = H_{ji} $?

BibTeX amsrefs

@MISC {197101, TITLE = {Why does Hamiltonian follow the property $H^*_{ij} = H_{ji} $?}, AUTHOR = {user36790 (https://physics.stackexchange.com/users/36790/user36790)}, HOWPUBLISHED = {Physics Stack Exchange}, NOTE = {URL:Why does Hamiltonian follow the property $H^*_{ij} = H_{ji} $? (version: 2015-07-31)}, EPRINT = {Why does Hamiltonian follow the property $H^*_{ij} = H_{ji} $?}, URL = {Why does Hamiltonian follow the property $H^*_{ij} = H_{ji} $?}

}

\bib{197101}{misc}{
title={Why does Hamiltonian follow the property $H^*_{ij} = H_{ji} $?},
author={user36790 (https://physics.stackexchange.com/users/36790/user36790)},
note={URL: Why does Hamiltonian follow the property $H^*_{ij} = H_{ji} $? (version: 2015-07-31)},
eprint={Why does Hamiltonian follow the property $H^*_{ij} = H_{ji} $?},
organization={Physics Stack Exchange}
}

Even yesterday I didn't see it. I really don't know what these mean; I am really ignorant of these stuffs.

Can anyone explain what this cite is actually meant for? What is its function?

image without "cite"

image with "cite"

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    $\begingroup$ How do you get the image of the site from the past? $\endgroup$
    – Ooker
    Oct 8, 2015 at 13:19
  • $\begingroup$ @Ooker: What do you want to know? $\endgroup$
    – user36790
    Oct 8, 2015 at 13:29
  • $\begingroup$ i mean, if you are not aware that tomorrow the site is changed, then why do you take the image of it today, so that you can use it to ask tomorrow? $\endgroup$
    – Ooker
    Oct 8, 2015 at 13:37
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    $\begingroup$ @Ooker: I love conspiracy theories! No, actually, you know about India? At most of the places, the internet speed is less than that of snail's pace; sometimes it becomes dead!! So, I generally don't close most of the pages I couldn't complete reading at the night & let them stay for the next morning or so without shutting down my laptop but rather letting it hibernate. This is the case here. I had the previous page & so I took the shot; that's it:) $\endgroup$
    – user36790
    Oct 8, 2015 at 17:24

2 Answers 2

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The posts made on any StackExchange site are licensed by the CC-SA-3.0 license with attribution required. This means if you use the content, or derive from the content, on the site you must provide a link to the original and to the original user (essentially -- I summarized, go read those links for more information).

If you did this on a website, that's pretty easy to manually include the <a></a> tags and do what you need to do. However, if you are writing lecture notes, or a journal article, or a thesis, or something like that, it isn't always as easy. The cite button that you refer to gives you a citation in BibTeX format as well as a LaTeX bibitem format. One can use these when typesetting a document using LaTeX and a citation will occur where desired and the bibliography will contain the full information required by the license.

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I'm surprised SE didn't post something about it themselves...

If you check this answer to a post on meta.Mathoverflow, it looks like having a "cite" link originated on Mathoverflow, back in the SE 1.0 days. SE recently changed the way the cite link is laid out (based on comments/complaints about it 2 years ago) and applied the change to MO, Phys.SE and a couple other SE sites.

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    $\begingroup$ Can you tell me, sir, what this is meant for? $\endgroup$
    – user36790
    Sep 12, 2015 at 10:00

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