Typing & in LaTeX
How do I use '&' literally in LaTeX?
dpkg --configure -a  Setting up linux-image-3.13.0-35-generic (3.13.0-35.62) ... Running depmod. update-initramfs: deferring update (hook will be called later) The link /initrd.img is a dangling linkto /boot/initrd.img-3.13.0-35-generic vmlinuz(/boot/vmlinuz-3.13.0-35-generic ) points to /boot/vmlinuz-3.13.0-35-generic  (/boot/vmlinuz-3.13.0-35-generic) -- doing nothing at /var/lib/dpkg/info/linux-image-3.13.0-35-generic.postinst line 491. Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.13.0-35-generic /boot/vmlinuz-3.13.0-35-generic run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.13.0-35-generic /boot/vmlinuz-3.13.0-35-generic update-initramfs: Generating /boot/initrd.img-3.13.0-35-generic  gzip: stdout: No space left on device E: mkinitramfs failure cpio 141 gzip 1 update-initramfs: failed for /boot/initrd.img-3.13.0-35-generic with 1. run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1 Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-3.13.0-35-generic.postinst line 1025. dpkg: error processing package linux-image-3.13.0-35-generic (--configure):  subprocess installed post-installation script returned error exit status 2 dpkg: dependency problems prevent configuration of linux-image-extra-3.13.0-35-generic:  linux-image-extra-3.13.0-35-generic depends on linux-image-3.13.0-35-generic; however:   Package linux-image-3.13.0-35-generic is not configured yet.  dpkg: error processing package linux-image-extra-3.13.0-35-generic (--configure):  dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of linux-image-generic:  linux-image-generic depends on linux-image-3.13.0-35-generic; however:   Package linux-image-3.13.0-35-generic is not configured yet.  linux-image-generic depends on linux-image-extra-3.13.0-35-generic; however:   Package linux-image-extra-3.13.0-35-generic is not configured yet.  dpkg: error processing package linux-image-generic (--configure):  dependency problems - leaving unconfigured Errors were encountered while processing:  linux-image-3.13.0-35-generic  linux-image-extra-3.13.0-35-generic  linux-image-generic Alignment issue in 'Your Sites' section in the Android app There is some unwanted extra spaces in between each site in the Your Sites section.  Steps to reproduce:   Touch the Nav Icon in the left top corner Touch the EDIT link in YOUR SITES Scroll the screen; there is unwanted spaces in between the each site   For reference I recorded the same:    Configurations:   App Version: 1.0.85 Device Manufacturer: Motorola Device Model: XT1033 OS Version: 5.1 (2) i m using ubuntu 10.10. please tell me how to type in hindi fonts in open office word. please help Is given metric space $(M, d)$. Let $A\cap B = \emptyset; \,\,\text{dist}(A,B):=\inf\{d(x,y):x\in A, y\in B\}$. $A, B$ are both closed sets. Is it possible that $\text{dist}(A,B)=0$?  The first thought comes into mind is that obviously $\text{dist}(A,B)&gt;0$, but possibly there are some tricky $d$ and $A, B$ so that it's untrue.  Thanks in advance! How do I choose grid and block dimensions for CUDA kernels? Use grep --exclude/--include syntax to not grep through certain files Induced sequence of global sections I'm reading Differential Analysis on Complex Manifolds by Raymond O. Wells. It states the following in the beginning of section 3 of chapter 2 on page 51:  Consider a short exact sequence of sheaves:  $$0 \to \mathcal{A} \to \mathcal{B} \to \mathcal{C} \to 0$$  Then it is easy to verify that the induced sequence  $$0 \to \mathcal{A}(X) \to \mathcal{B}(X) \to \mathcal{C}(X) \to 0$$  is exact at $\mathcal{A}(X)$ and $\mathcal{B}(X)$ but not necessarily at $\mathcal{C}(X)$. After that they give an example of failing exactness at $\mathcal{C}(X)$.  My problem is that Ii dont see why the induced sequence has to be exact at $\mathcal{A}(X)$ and $\mathcal{B}(X)$. I tried to find an answer in other books. In the book Sheaf Theory by Bredon they make the same statement in proposition 2.2 but they also state it is easy to verify.  I tried to come up with an argument of my own and got something like this (the argument is wrong i think): If we have the zero element  $0 \in \mathcal{B}(X)$ this should induce a section $\tilde{0} $ of the stalks of $\mathcal{B}$ and should take the value of the zero element in every stalk. Then since the sequence of sheaves is exact (and thus exact in stalk level) we get that around every $x \in X$ there should be an open $V$ such that $\tilde{0}|_{V}$ is the image of the zero section in $\mathcal{A}(V)$ and since $\mathcal{A}$ is a sheaf we can patch these together to get a global zero section.  Also while i get the example that shows inexactness at $\mathcal{C}(X)$ i dont get why this should generally be the case.  Any help would be much appreciated Why should users never use normal sudo to start graphical applications? I just want to write \Sha without ruining everything I realize similar questions have been asked before but I am not satisfied with any of the answers I've seen. I would like to use the Cyrillic letter Ш to denote a particular group in mathematics. Most solutions involve using OT2 or T2A encoding; for example, at . However, this makes the other text in the document look bad.   For example, using the solution above, I get    while I would like to have     The first seems to be shaded strangely and the characters don't seem to align right.  Does anyone know how I can write the character Ш (in math mode) without changing the default font for the rest of the text? May I summarize all answers on StackOverflow, I asked a . There are many good answers but I can not accept just one of it. I would prefer to create my own answer where I summarize all answers. Is that allowed? Java generics super keyword How can I obfuscate (protect) JavaScript? I want to make a JavaScript application that's not open source, and thus I wish to learn how to can obfuscate my JS code? Is this possible? why ls reports a huge file and du does not? When you respond to someone in a comment you use @PersonsName. Is there anyway it could be linked like this @ Maintaining Units of measure across type converstions Finding a set of continuous functions with a certain property 2 I need help finding the set of continuous functions $f : \Bbb R \to \Bbb R$ such that for all $x \in \Bbb R$, the following integral converges:  $$\int_0^1 \frac {f(x+t) - f(x)} {t^2} \ \mathrm dt$$  I think it might be the set of constant functions but i havent been able to prove it :(   I was thinking that you can use the stone weiestrass theorem considering the set of continuous functions on a closed  interval(non trivial) ,and a subset which contains the set of continuous functions whose integral above diverges in some point in that interval along with  with the set of constant functions. So in order to solve the problem i need only to prove that if two functions do not meet the condition of the problem then their product does not as well .  I hope you can provide some insight and thank you . I'm new to Linux and am trying to set up Python / Django on my machine!  I installed Python 3.3 from the source file and it was compiled into /usr/local/bin. Then I created a symbolic link between /usr/bin/python and /usr/local/bin/python3, so that whenever I invoke python from the command line it uses the latest version.  Now I am trying to install MySQL Python and I got the following output:  apt-get install python-mysqldb  Reading package lists... Done Building dependency tree Reading state information... Done python-mysqldb is already the newest version. The following extra packages will be installed:   apt-listchanges python-apt Suggested packages:   python-glade2 python-gtk2 python-apt-dbg python-vte python-apt-doc The following packages will be upgraded:   apt-listchanges python-apt 2 upgraded, 0 newly installed, 0 to remove and 142 not upgraded. 3 not fully installed or removed. Need to get 0 B/394 kB of archives. After this operation, 250 kB of additional disk space will be used. Do you want to continue [Y/n]? Y Traceback (most recent call last):   File "/usr/bin/apt-listchanges", line 28, in &lt;module&gt;     import apt_pkg ImportError: No module named 'apt_pkg'   Any ideas on how to fix this?  Or any tips on how to clean up this install (if this one is too broken)? The equivalence of sample correlation and R statistic for simple linear regression What is the expected minimum euclidean distance between $N$ points uniformly and independently chosen on the shell(sphere) of 3-D ball of radius $R$?   Note that the expected minimum distance might be difficult to compute, so a good lower bound is also fine.   My approach  I take the approach similar to this   .   Suppose we put $N$ circles of radius $r$ uniformly on the surface of the ball. Therefore we could compute the expected minimum distance by the following expression \begin{align} E[D]=\int_0^\infty P(D&gt;t) dt. \end{align}  So, it remains to compute  $P(D&gt;t)$. Actually, since we are after a lower bound on  $E[D]$ it is enought to give a lower bound on $P(D&gt;t)$.  Let $S_i$ be the event that the pair of circles does not intersect which should be given by \begin{align} P(S_i) =  \frac{ Surf(R)-Surf(r)}{Surf(R)}= 1-\frac{  \pi r^2}{ 4\pi R^2}=1-\frac{ r^2}{ 4 R^2} \end{align}  Now the probability that euclidean minimum distance $D$ between $N$ balls is bigger than $t$ should be similar to  \begin{align} P[ D \ge t] \stackrel{?}{=}  P[ \cap S_i] \end{align} However, I think we somehow need to converte from the geodesic distance to euclidean distance but I am not very sure how to do that? Includepdf causes an error message from pgfplots externalization I have a file test.pdf which I include in a document containing also an externalized pgfplots picture.  When I compile the following code, I get the error message Sorry, the system call pdflatex ... did NOT result in a usable file.  In order to make my code work, I first need to remove the includepdf statement, compile (to create the externalized figures) and then compile again with the includepdf statement.  I suppose that it is a bug, or is there any possibility to solve it ?  Of course, the file test.pdf is totally independent from the externalized pictures from pgfplots.  \documentclass{scrbook}   \usepackage{pgfplots}  \pgfplotsset{compat=1.8}  \usepgfplotslibrary[external]  \tikzexternalize[shell escape=-enable-write18]  \usepackage{pdfpages}   \begin{document} \includepdf{report_test-figure44}   \begin{tikzpicture}  \begin{axis}[  xlabel=Cost, ylabel=Error]  \addplot[color=red,mark=x] coordinates {  (2,-2.8559703) (3,-3.5301677) }; \end{axis}  \end{tikzpicture}   \end{document}