Athough discussion on that question is  (), it seems that larger spaces after the end of a sentence is preferable in English. By default, LaTeX puts wider spaces after a period (full stop).  I took the habit of escaping spaces (i.e., writing i.e.\, or to make it more clear, i.e.\␣) after    Latin locutions, as   etc. cf.  Mathematical expressions, as    s.t. (such that) w.r.t. (with respect to) resp. (respectively)    However, according to , which quotes Chapter 14 of the Texbook, and according to any bbl file, spaces after names initial should not be escaped. That is, one write  Donald~E. Knuth   and not  Donald~E.\ Knuth   I'm confused: shouldn't that space be escaped as well?
Sometimes I found that writing just "J. Doe" may lead, in a justified line with few words, to a big space between the initial and the surname. Using J.\,Doe looks ok but I would like to know if there is a general rule for spacing between initials and surnames.
Adding multiple CKEditor instances in jquery How can I revert a config file back to the originally installed version after I have edited it? I want to revert a file in /etc/ back to its originally-installed form. I have edited the file since it was installed. How can I revert this config file? Apt is smart enough not to overwrite edited config files, so how do I tell it that I want it to do so?  For argument's sake, let's say that I want to revert the file /etc/foo.conf from the package foo. Query Activity for ORDER BY xxx DESC LIMIT How to prove or disprove statements about sets Prove or disprove:  The set: $\{ \emptyset\}^{\Bbb N}$ has only one element.  The set $\emptyset^{\Bbb N}$ is empty.    I'm pretty sure both are true, for 1. all the natural numbers go to the empty set and that is the only element. Where as 2. all the natural numbers go to nothing so that's why it's empty. (Same as $ {\Bbb N}^{\emptyset} $ nothing goes to something is nothing (I think)). The problem is I have no idea how to show this so advice would be appreciated.  Edit: My defintion of a function is: $f:B\to A$ if  $(a_1,b),(a_2,b)\in f \ \Rightarrow \ a_1=a_2$ So for 2. I can simply say that: $(1,\emptyset),(2,\emptyset)\in f \Rightarrow a_1\neq a_2$  ? Sending a value to JavaScript I have set theme handler for a form in Drupal and this handler has a template file. What is the easiest way to send a value from PHP to JavaScript in that include file? In Bash, when to alias, when to script, and when to write a function? Our 3 months old baby is very keen on rolling over and being on his stomach. Most of the time he automatically rolls over in a few minutes after we put him on his back, including during bed time. Is this dangerous? We are particularly worried that   his nose maybe blocked when facing down it is said that SIDS risk increases when a baby sleeps on his stomach   If it is dangerous, how can we stop this, especially during bed time or other times when we can't watch him continuously? Is there a font, available to -all- TeX users, that includes a glyph that can be recognized as the Unicode Replacement Character?  I realize I can use XeTeX with a  (or maybe any character not in the font), but I'm interested in using standard pdfTeX with standard LaTeX 2e and a pure ASCII input file.  The glyph typically looks like a filled black diamond with a white question mark inside it:    If no such font is available, what's the best robust strategy for getting such a glyph into a standard pdfTeX document (one whose input file has no Unicode or non-ASCII UTF-8 byte sequences in it) without using XeTeX or similar?  Inserting TikZ commands?  Raw PostScript?  Right now, for lack of a better solution, I'm using a \textbullet, simply because it's the boldest/blackest glyph I can think of, and it's available in most standard fonts.  Creating a custom font with one glyph in it is not really viable, or if it is it's a strategy of last resort, unless (perhaps) it can be done automatically and on the fly when processing the document each time.  (Reposted from the texhax mailing list: ; originally posed by Doug McKenna) Multiple cases in switch statement Is there a way to fall through multiple case statements without stating case value: repeatedly?  I know this works:  switch (value) {    case 1:    case 2:    case 3:       // Do some stuff       break;    case 4:    case 5:    case 6:       // Do some different stuff       break;    default:        // Default stuff       break; }   but I'd like to do something like this:  switch (value) {    case 1,2,3:       // Do something       break;    case 4,5,6:       // Do something       break;    default:       // Do the Default       break; }   Is this syntax I'm thinking of from a different language, or am I missing something? Can I travel to the UK one day before my visa starts? I am planning to travel to the UK with my mother. Her visa is valid from 15th June and my visa's validity starts on July 1st.   I will be leaving from Chennai on June 30th, with a transit in Mumbai, but the arrival in the UK is late on the 30th of June. Will I be permitted to travel or will I be prevented from boarding because of the July 1 validity?   Do I need to apply for a vignette transfer? I'm confused about it, as some sites say it is only for those with a new passport. If I do need a vignette transfer, what is the procedure and what documents are required? How can I get the Ubuntu shell on Windows 10 to recognize a connected android device? I'm trying to connect adb to my Android device in the Windows 10 Ubuntu shell, but it doesn't seem to be working:    adb does work normally on Windows, so it's not a problem with the phone or the connection.  Do I have to do something like mount the port in the Ubuntu shell?  How?  (The goal is to pass logcat to grep, which would obviously work better in Ubuntu.) n tasks assigned to n computers, what is the EX value of a computer getting 5 or more tasks? Hi I would like to know whether the trace of the inverse of a symmetric positive definite matrix $\mathrm{trace}(S^{-1})$ is convex.  Actually I know that the trace of a symmetric positive definite matrix $S\in M_{m,m}$ is convex since we can find $B\in M_{n,m}$ such that $S=B^T\times B$ then we can write the trace as the sum of scalar quadratic forms, i.e. $\mathrm{trace}(S)=\mathrm{trace}(B^T\times B)=\sum_{j=1}^mb_j^T\times b_j$ where $b_j$ is the $j^{th}$ column of $B$.  for instance if we have  $trace([\begin{array}{cc} 1 &amp; 2  \\ 3 &amp; 4  \\ \end{array}] \times [\begin{array}{cc} 1 &amp; 3  \\ 2 &amp; 4  \\ \end{array}])= [\begin{array}{cc} 1 &amp; 2  \\ \end{array}]\times [\begin{array}{c} 1   \\ 2   \\ \end{array}]+ [\begin{array}{cc} 3 &amp; 4  \\ \end{array}]\times [\begin{array}{c} 3   \\ 4   \\ \end{array}]=30$  And so I wonder if $\mathrm{trace}(S^{-1})$ is convex too.. I have a Win 7/11.10 dual boot system with Grub 2 as the default bootloader. However, I want to make Windows bootloader the default bootloader (grub 'dos' like interface scrares the hell out of my sister) so when I start the PC I will have the following boot options: 1. Windows 7 2. Ubuntu  NB: A process to reverse this operation so Grub can be the default bootloader again will also be appreciated collapse vs minimize It would be nice to allow users to mark a change in an answer (or question) as minor (e.g. for a simple spelling or grammar correction). A change marked as minor wouldn't push the question on top of the list of questions on the home page or in the feeds. It wouldn't trigger any notification. This could be implemented with a "Minor change" checkbox when editing an entry (a la Confluence). What do you think? As we all know, going near a black hole (Gargantua in this case) slows down time, according to the theory of relativity.  So when Cooper comes out of the black hole, after spending a fair bit of time there, shouldn't he be much older than Brand who hasn't gone inside Gargantua? Jquery Validation for dynamically added rows that has multiple element with same name Django template how to look up a dictionary value with a variable Find the integer solutions: $$a·b^5+3=x^3,a^5·b+3=y^3$$ This is the first problem of today's USAJMO (has finished),I only find a trival result that $x\equiv y \pmod6$ and $abxy≠0 \pmod 3$.  Thanks in advance!