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Finally I found out what my profile is good for: I can abuse it as a clipboard!

@: Welcome to tex.sx! A tip: you can use backticks `\`` to mark your inline code as I did in my edit.

@: Welcome to tex.sx! A tip: If you indent lines by 4 spaces, then they're marked as a code sample. You can also highlight the code and click the "code" button (with "101010" on it).

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@: I tidied up your question a bit, hope that's OK.

I think your question is answered [here](). (Possible duplicate?)

@: Can you please add a [minimal example](http://meta.tex.stackexchange.com/q/228/1235) that illustrates your problem?


May
22
answered Why no vertical-mode Knuth-Plass?
May
22
answered Best practice for typesetting quantifiers?
May
21
comment Putting a header above the cases in an equation
Your \vphantom{blah} adjustment is a bit too small, see the comment to my answer.
May
21
comment Putting a header above the cases in an equation
@jmc: I mostly agree. Note, however, that John's answer depends on the implementation of cases, too: he uses that it is based of array. Moreover, I just realized that his \vphantom{blah} gives only an adjustment of 12pt (instead of 14.4pt) before the cases since he doesn't use \renewcommand\arraystretch{1.2} for the outer array.
May
21
answered Putting a header above the cases in an equation
May
21
answered how to arrange the place before a pair of parentheses indicating a note in math mode?
May
20
comment Using commas in mathematical formulas
@needhelp: Then you shouldn't use any additional space after the comma.
May
20
comment Using commas in mathematical formulas
The advice to use $a>0$, $b<1$ is not sound since the OP means $a,b\in(0,1)$. In this case one can use $0<a,b<1$, but this is also somewhat ambiguous.
May
20
comment Tiny gaps in large parentheses in PDF
This is a viewer problem (and may be due to suboptimal hinting).
May
20
comment Using commas in mathematical formulas
You're right, this is quite close. And I can't explain why I can accept it rather with = than with \in.
May
20
answered How to adjust the blank space between the top of the left curly brace and the contents?
May
20
comment How to adjust the blank space between the top of the left curly brace and the contents?
I'm OK with scaling characters as a last resort, but I think you're doing it too generously. (This is understandable as you're the author of scalerel, but still ... :-))
May
20
comment Using commas in mathematical formulas
My point is the \in, which I wouldn't use like this. It would be OK with a textual "in".
May
19
comment Using commas in mathematical formulas
Can you tell where in the TeXbook Knuth says this? The closest I could find is the recommendation to write for $x = a$, $b$, or~$c$ and not for $x = a, b$, or $c$. I'd not recommend writing $a$, $b$, \dots, $z \in S$!
May
19
comment Using commas in mathematical formulas
$0<a$, $b<1$ and $0<a,b<1$ usually mean two different things! Do you mean two separate conditions or one and the same condition for a and b?
May
18
comment Why is there a \, space at the beginning of the “aligned” environment?
Thanks a lot for the update! I guess this is the best answer I can hope for without asking Michael Spivak. Thanks in particular for answering the question I hadn't asked: what the \null is doing there. One thing I find very curious: for \matrix and \smallmatrix there's indeed a \, at the end, as the cited text ("around the \vcenter") suggests, but for \aligned it's not there (which Frank discusses at some length in his nice answer).
May
18
accepted Why is there a \, space at the beginning of the “aligned” environment?
May
17
awarded  Necromancer
May
17
comment Why is there a \, space at the beginning of the “aligned” environment?
I'm curious, did you find something in your dig that looks like an explanation?
May
17
comment Problem with beamer's \pause in alignments
Sorry to ask, but did you test your answer? I get the same problem with eqnarray. Moreover, note that I don't use align at all, only cases.