one click software installation friends,  i am very new to ubuntu,and is been using this incredible thing from past few days, it's a really very new experience for me,i would like to know about one click install methods as like in windows we found .exe softwares every where, is there any method? and please do suggest me some awesome websites for repository's. Thanks
How do I install software using the Ubuntu Software Center? The title says it all. I'd like to know how I can install software - an example is the Chromium web browser.
Why is $5^{n+1}+2\cdot 3^n+1$ a multiple of $8$ for every natural number $n$? How to prove the continuity of the metric function? Amazon RDS - Online only when needed? biblatex: remove commas between last and first names in bibliography SELinux preventing Apache from writing to a file SELinux is preventing the apache user from writing to a log file which it owns. When I do setenforce 0 it works. Otherwise it shows this error  IOError: [Errno 13] Permission denied: '/var/www/webapp/k/site/k.log'   The security context of the file:  $ ll -Z k.log  -rw-r--r--. apache apache system_u:object_r:httpd_sys_content_t:s0 k.log   The file was created when the SELinux mode was set to permissive.  How to set the security context so the apache user can write in that directory? I did set that directory security context using chcon but I can't find a suitable file type.  From audit.log:  type=AVC msg=audit(1409945481.163:1561): avc:  denied  { append } for  pid=16862 comm="httpd" name="k.log" dev="dm-1" ino=201614333 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:httpd_sys_content_t:s0 tclass=file type=SYSCALL msg=audit(1409945481.163:1561): arch=c000003e syscall=2 success=no exit=-13 a0=7fa8080847a0 a1=441 a2=1b6 a3=3 items=0 ppid=15256 pid=16862 auid=4294967295 uid=48 gid=48 euid=48 suid=48 fsuid=48 egid=48 sgid=48 fsgid=48 tty=(none) ses=4294967295 comm="httpd" exe="/usr/sbin/httpd" subj=system_u:system_r:httpd_t:s0 key=(null) External arrows in tables How to achieve similar arrows as in the picture?    The main issue cause of arrow   a(2,1) -> a(1,3), a(3,1) -> a(1,4), etc. Or at least how to make them on top of the table, but to make it look readable.  \documentclass[border=10mm]{standalone} \usepackage{tikz} \usetikzlibrary{matrix}  \begin{document} \begin{tikzpicture}[&gt;=stealth] \matrix (A) [matrix of nodes,row sep=3mm,column sep=3mm,nodes in empty cells] {   $a_{11}$ &amp; $a_{12}$ &amp; $a_{13}$ &amp; $a_{14}$ &amp; $a_{15}$ &amp;  $\dots$ \\   $a_{21}$ &amp; $a_{22}$ &amp; $a_{23}$ &amp; $a_{24}$ &amp; $a_{25}$ &amp;          \\   $a_{31}$ &amp; $a_{32}$ &amp; $a_{33}$ &amp; $a_{34}$ &amp; $a_{35}$ &amp;          \\   $a_{41}$ &amp; $a_{42}$ &amp; $a_{43}$ &amp; $a_{44}$ &amp; $a_{45}$ &amp;          \\   $a_{51}$ &amp; $a_{52}$ &amp; $a_{53}$ &amp; $a_{54}$ &amp; $a_{55}$ &amp;          \\   $\vdots$ &amp;          &amp;          &amp;          &amp;          &amp; $\ddots$ \\ };  \begin{scope}[thick,black,-&gt;] \draw (A-1-1)--(A-1-2); \draw (A-1-2)--(A-2-2); \draw (A-2-2)--(A-2-1); %\draw (A-2-1)--(A-1-3); \draw (A-1-3)--(A-2-3); \draw (A-2-3)--(A-3-3); \draw (A-3-3)--(A-3-2); \draw (A-3-2)--(A-3-1); %\draw (A-3-1)--(A-1-4); % etc. \end{scope} \end{tikzpicture} \end{document} What points in the complex plane satisfy $|z|=arg(z)$. How to disable Windows 10 system log In Windows 10 Resource Monitor I found that the system process is constantly writing C:\ProgramData\Microsoft\Windows\wfp\wfpdiag.etl at like 30-100KB/s. This equals 1TB write/year which is not healthy for SSD. There are other log write like C:\Windows\System32\LogFiles*** too.   Although logs is needed for diagnostics, it's better to be turned on only when problem has already occured.  Is it possible to disable as much system logs as possible to decrease garbage write amoung to SSD? Prove that $Z(G)$ which is the center of $G$ is a subgroup of $G$ Re-Structuring a JSON Let us consider that $u\in C^2(\Omega)\cap C^0(\Omega)$ and satisfying the following equation .  $\Delta u=u^3-u , x\in\Omega$ and   $u=0 $   in  $\partial \Omega$  $\Omega \subset \mathbb R^n$ and bounded .   I need hints to find out what possible value $u$ can take ?  Thank you for ur hints in advance . Lightning QuickAction (API) without modal Real Analysis, Folland Problem 1.3.15 Measures Given a measure $\mu$ on $(X,M)$, define $\mu_0$ on $M$ by $$\mu_0(E) = \sup\{\mu(F): F\subset E \ \text{and} \ \mu(F) &lt; \infty\}$$ a.) $\mu_0$ is a semifinite measure. It is called the semifinite part of $\mu$. b.) If $\mu$ is semifinite, then $\mu = \mu_0$ (Use Exercise 14) c.) There is a measure $\nu$ on $M$ (in general, not unique) which assumes only the values of $0$ and $\infty$ such that $\mu = \mu_0 + \nu$.  The proof of Exercise 14 can be found  For a.) I believe we need to show that $\mu_0(E) = \infty$. Perhaps we can do this by proof of contradiction, similarly to what the proof in the link above does (actually it seems identical). For b.) I am not sure how we can show $\mu = \mu_0$ I think maybe we have to show by construction that $\mu \leq \mu_0$ and $\mu \geq \mu_0$ For c.) I haven't any idea for. Any suggestions is greatly appreciated. How to analyse 'Element not Found' exceptions when working with Selenium "Images with street signs" CAPTCHA impossible to solve I just got challenged (over on ) by the new "Mark all images with street signs" CAPTCHA.  I must have tried a dozen times to solve it by checking all images that had street signs, but I never succeeded.  Of note is a text input field without instructions of what to enter there. I suspect that is the problem: It is expecting input, but doesn't tell me what to input.  It's either broken or I am missing something.  I am using Chrome on an iPhone in "full site" mode. How to convert aspell dictionary to simple list of words? I want to get list of all words from aspell dictionary. I downloaded aspell and aspell polish dictionary, then unziped it using:  preunzip pl.cwl   I got pl.wl:  ... hippie hippies hippiesowski/bXxYc hippika/MNn hippis/NOqsT hippisiara/MnN hippiska/mMN hippisowski/bXxYc ...   but they appear with sufix like /bXxYc or /MNn. These suffixes are defined in pl_affix.dat, which looks like  ... SFX n Y 5 SFX n   a         0         [^ij]a SFX n   ja        yj        [^aeijoóuy]ja SFX n   a         0         [aeijoóuy]ja SFX n   ia        ij        [^drt]ia SFX n   ia        yj        [drt]ia ...   It is connected to the declination and conjugation. How can I add to the first list all forms (with all corresponding suffixes as defined in .dat file ) ?  BTW: I need this list to spell-checker jazzy. How can I prove that every planar graph can be expressed as a union of (maximum) five edge-disjoint forests?  Only thing I can think about is going somehow like the $5$ color theorem but I get stuck in the middle. Or with induction, but still something doesn't fit. Can you help? In the previous version the logout button is under your username, which it can be found by clicking the down arrow. However, in the new version, after a couple minutes of searching, it is under the "site-switcher" button:        This is really illogical since the logout button is usually under your username, including Google and Yahoo! services.  I suggest bringing back the  which will definitely benefit new users and even old users. Let $ P(x)=x^8 - x^7 +x^2 -x +15 $, Descartes' Rule of Signs tells us that the polynomial has 4 positive real roots , but if we group the terms as $$ P(x)= x(x-1)(x^6+1) +15 $$ we find that $ P(x) $ does not have any positive roots.  Where did I err ? Closed form for $ \int_0^\infty {\frac{{{x^n}}}{{1 + {x^m}}}dx }$ I've been looking at  $$\int\limits_0^\infty  {\frac{{{x^n}}}{{1 + {x^m}}}dx }$$  It seems that it always evaluates in terms of $\sin X$ and $\pi$, where $X$ is to be determined. For example:  $$\displaystyle \int\limits_0^\infty  {\frac{{{x^1}}}{{1 + {x^3}}}dx = } \frac{\pi }{3}\frac{1}{{\sin \frac{\pi }{3}}} = \frac{{2\pi }}{{3\sqrt 3 }}$$  $$\int\limits_0^\infty  {\frac{{{x^1}}}{{1 + {x^4}}}dx = } \frac{\pi }{4}$$  $$\int\limits_0^\infty  {\frac{{{x^2}}}{{1 + {x^5}}}dx = } \frac{\pi }{5}\frac{1}{{\sin \frac{{2\pi }}{5}}}$$  So I guess there must be a closed form - the use of $\Gamma(x)\Gamma(1-x)$ first comess to my mind because of the $\dfrac{{\pi x}}{{\sin \pi x}}$ appearing. Note that the arguments are always the ratio of the exponents, like $\dfrac{1}{4}$, $\dfrac{1}{3}$ and $\dfrac{2}{5}$. Is there any way of finding it? I'll work on it and update with any ideas.    UPDATE:  The integral reduces to finding   $$\int\limits_{ - \infty }^\infty  {\frac{{{e^{a t}}}}{{{e^t} + 1}}dt} $$  With $a =\dfrac{n+1}{m}$ which converges only if   $$0 &lt; a &lt; 1$$  Using series I find the solution is     $$\sum\limits_{k =  - \infty }^\infty  {\frac{{{{\left( { - 1} \right)}^k}}}{{a + k}}} $$