tea.mathoverflow.net - Discussion Feed (Is it possible to use xypic commands?) Sun, 04 Nov 2018 13:07:57 -0800 http://mathoverflow.tqft.net/ Lussumo Vanilla 1.1.9 & Feed Publisher Harald Hanche-Olsen comments on "Is it possible to use xypic commands?" (4013) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=4013#Comment_4013 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=4013#Comment_4013 Mon, 22 Mar 2010 16:49:09 -0700 Harald Hanche-Olsen So we don't talk about its position on the keyboard. Just say what character we're talking about (`), say it's somewhere on most (western) keyboards, and you may need to follow the key with a space to make it render properly. Leaver it at that. No need to tell them we're really talking about U+0060 GRAVE ACCENT. (Oh, but that is another name for it. The official name even.)

]]> Harry Gindi comments on "Is it possible to use xypic commands?" (4008) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=4008#Comment_4008 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=4008#Comment_4008 Mon, 22 Mar 2010 16:17:26 -0700 Harry Gindi Harald Hanche-Olsen comments on "Is it possible to use xypic commands?" (4004) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=4004#Comment_4004 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=4004#Comment_4004 Mon, 22 Mar 2010 15:40:49 -0700 Harald Hanche-Olsen @fpqc: Too complicated. Anyhow, is there any keyboard that doesn't have a key with ` on it? It's most likely a dead key on most European keyboards, so we might advice people with such keyboards to hit the space bar after it. Don't worry too much about the ‘ character – most people probably won't know how to type it anyhow.

]]> Harry Gindi comments on "Is it possible to use xypic commands?" (3999) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3999#Comment_3999 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3999#Comment_3999 Mon, 22 Mar 2010 15:00:28 -0700 Harry Gindi
http://www.fileformat.info/info/unicode/char/0060/index.htm

Edit: Oops, meant to hit "edit post". Sorry for the double post! ]]> Harry Gindi comments on "Is it possible to use xypic commands?" (3998) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3998#Comment_3998 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3998#Comment_3998 Mon, 22 Mar 2010 14:59:33 -0700 Harry Gindi Mariano comments on "Is it possible to use xypic commands?" (3997) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3997#Comment_3997 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3997#Comment_3997 Mon, 22 Mar 2010 14:15:18 -0700 Mariano fpqc, in your keyboard...

Tom, "backtick" is standard unix slang, although bash's manpage, for example, uses "backquote".

]]> Harry Gindi comments on "Is it possible to use xypic commands?" (3995) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3995#Comment_3995 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3995#Comment_3995 Mon, 22 Mar 2010 14:03:36 -0700 Harry Gindi Harald Hanche-Olsen comments on "Is it possible to use xypic commands?" (3992) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3992#Comment_3992 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3992#Comment_3992 Mon, 22 Mar 2010 13:46:27 -0700 Harald Hanche-Olsen It can get a bit tricky to explain about the backtick (I think “backquote” is a more common name), since we want ` but not ‘, both of which could fit the description.

]]> Tom Leinster comments on "Is it possible to use xypic commands?" (3990) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3990#Comment_3990 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3990#Comment_3990 Mon, 22 Mar 2010 13:42:15 -0700 Tom Leinster Slightly off topic, but I'd like to mention the fact that I never heard the word "backtick" before I came to this site. I guess I'd call that character an open quote mark or something, though frankly I've probably never called it anything. So it took me a while to figure out what people were going on about.

I think it would be helpful if wherever the word "backtick" appears in the help, there was a parenthetical comment such as "(the back-to-front apostrophe)" to explain what it means. (Or a link would do.)

]]> Anton Geraschenko comments on "Is it possible to use xypic commands?" (3980) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3980#Comment_3980 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3980#Comment_3980 Mon, 22 Mar 2010 10:51:25 -0700 Anton Geraschenko @fpqc: yes, in the sense that I've already overwritten the javascript for the editor. One day I might try to modify it so that it looks for math that might be messed up and put backticks around it. I'm not very excited about maintaining any code difference against the SE team, but it's probably possible to do it in a fairly clean way that won't be too hard to maintain.

]]> Harry Gindi comments on "Is it possible to use xypic commands?" (3976) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3976#Comment_3976 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3976#Comment_3976 Mon, 22 Mar 2010 09:32:22 -0700 Harry Gindi Anton Geraschenko comments on "Is it possible to use xypic commands?" (3975) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3975#Comment_3975 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3975#Comment_3975 Mon, 22 Mar 2010 09:08:58 -0700 Anton Geraschenko I think Harald's point was that it only eats the first backslash when you type "\\", so you could not use backticks around a matrix, but use "\\\\" to start a new row. I prefer to use backticks any time I'd have to write improper LaTeX to get the right result otherwise.

]]> Harry Gindi comments on "Is it possible to use xypic commands?" (3969) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3969#Comment_3969 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3969#Comment_3969 Mon, 22 Mar 2010 06:51:54 -0700 Harry Gindi
Interestingly, since comments do not have markdown support, they render fine. ]]> Harald Hanche-Olsen comments on "Is it possible to use xypic commands?" (3967) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3967#Comment_3967 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3967#Comment_3967 Mon, 22 Mar 2010 04:27:51 -0700 Harald Hanche-Olsen Markdown will eat some backslashes, not all. That can actually be more confusing than if it ate them all, since it can be difficult to discern the pattern. So it is a good idea to use backticks around all mathematics.

]]> Harry Gindi comments on "Is it possible to use xypic commands?" (3966) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3966#Comment_3966 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3966#Comment_3966 Mon, 22 Mar 2010 02:20:45 -0700 Harry Gindi Unknown G. comments on "Is it possible to use xypic commands?" (3965) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3965#Comment_3965 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3965#Comment_3965 Mon, 22 Mar 2010 01:40:45 -0700 Unknown G. Harry Gindi comments on "Is it possible to use xypic commands?" (3964) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3964#Comment_3964 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3964#Comment_3964 Mon, 22 Mar 2010 01:03:06 -0700 Harry Gindi Might I suggest making the diagram using LaTeX matrices? Thse are a bit easier to read and give you some more flexibility, especiallly with labeling things.

]]> Unknown G. comments on "Is it possible to use xypic commands?" (3963) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3963#Comment_3963 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3963#Comment_3963 Sun, 21 Mar 2010 22:46:17 -0700 Unknown G. Steve Huntsman comments on "Is it possible to use xypic commands?" (3957) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3957#Comment_3957 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3957#Comment_3957 Sun, 21 Mar 2010 17:50:49 -0700 Steve Huntsman Anton Geraschenko comments on "Is it possible to use xypic commands?" (3956) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3956#Comment_3956 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3956#Comment_3956 Sun, 21 Mar 2010 17:29:33 -0700 Anton Geraschenko Not yet. jsMath, the engine we use to render LaTeX, doesn't support any commutative diagrams package. We'll switch to another engine, MathJax, once it is released. MathJax doesn't currently have support for commutative diagrams either, but I know that the developers want to add support for diagrams eventually. I believe (some subset of) xypic is the most likely candidate.

For now, I just use text-art diagrams, like this:

     f'
  X --> Y
g'|     |g
  v  f  v
  Z --> W

and

  x ---> x
 /|     /|
x ---> x |
| v    | v
| x ---|>x
v/     v/
x ---> x
]]> Unknown G. comments on "Is it possible to use xypic commands?" (3955) http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3955#Comment_3955 http://mathoverflow.tqft.net/discussion/298/is-it-possible-to-use-xypic-commands/?Focus=3955#Comment_3955 Sun, 21 Mar 2010 16:16:55 -0700 Unknown G.