My LaTeX was compiling perfectly a minute ago. I wrote some more, added in a citation - now it won't read any of my citations, and is giving me error messages and not allowing me to make a document which I need for a test.  It repeats this:  [1 Non-PDF special ignored!{C:/Users/riley/AppData/Local/MiKTeX/2.9/pdftex/config/ pdftex.map}] [2] [3] [4]  ! LaTeX Error: There's no line here to end.  See the LaTeX manual or LaTeX Companion for explanation. Type  H &lt;return&gt;  for immediate help.  ...                                                l.138 5        \\ ?
In a letter-class document that had no previous errors I am suddenly getting the error message:  "There's no line here to end" \opening{text}   I've used this file many times and today it starts giving this error. How do I troubleshoot this?
Visit the UK with an expired French identity card Why is Main method private? Is there a way to change the environment variables of another process in Unix? When flagging, there are two special case options: spam and rude or abusive.   What is spam, and when should I flag content as such? What is considered offensive, rude or abusive content? How does the spam flag differ from the rude or abusive flag? What is the effect of these special flags? When are these flags removed? The definitive guide to ConTeXt MkIV documentation Can I load a 32 bit DLL into a 64 bit process on Windows? Should I submit bank statements when applying for a UK Visa? What do they say about me? The UK Visas and Immigration Directorate publishes  that provides helpful tips that can result in successful visa applications. Section 2 of this guidance opens is entitled &quot;other documents you may want to provide&quot; (emphasis mine).  Section 2: other documents you may want to provide – all visitors This section provides guidance on the types of documents that you may want to provide to help us consider your application against the Immigration Rules. Previous travel documents/passports, which show previous travel. Financial documents showing that you have sufficient funds available.  These must clearly show that you have access to the funds, such as:  bank statements building society book proof of earnings such as a letter from employer confirming employment details (start date of employment, salary, role, company contact details) where a third party (who is either in the UK or will be legally in the UK at the time of your visit) is providing financial support to you e.g. a business, a friend or a relative, documents to show that they have sufficient resources to support you in addition to themselves and any dependant family should be provided   The first item is &quot;bank statements&quot; and this ties in with the , which says...  evidence that you can support yourself during your trip, eg bank statements or payslips from the last 6 months  (Note 'eg' is a Latin abbreviation meaning &quot;for example&quot;; this appears to be optional rather than a fixed requirement.) Question: How should someone interpret this such that the chances of success are maximized? How many statements should I submit? What are they looking for and what do my bank statements tell about me? List View Visibility Make Applications (Ubuntu Software) to access all the DRIVES in my computer Dimensions of symmetric and skew-symmetric matrices DropDown list onchange event and AJAX in MVC Find the radius of the inscribed circle of a right triangle. Find the radius of the inscribed circle of a right triangle. The triangle's height is $\sqrt{6} + \sqrt{2}$ while the bisector of the right angle is 4.  This seemed like a generic similar triangles problem but it isn't that simple when I tried to solve it. Any help?  EDIT: Here is a picture of the problem The units of $\mathbb Z[\sqrt{2}]$ Have a seat, guys   I think "have a seat" is a fixed phrase that does not change whether you address someone or a group of people.  Is that correct?  If you have more to add to the post, please do so as I would love to know more. Is it possible to switch from one area of graduate study to another in US universities? For example, suppose someone has enrolled in a computer science phd program. Can he switch over to math(or physics) phd program in the same school later?(or say from applied mathematics to pure mathematics?)  What are the steps for doing for doing that? Simplify a combinatorial sum Why my differential equations become True? Understanding p-value I know that there are lots of materials explaining p-value. However the concept is not easy to grasp firmly without further clarification.  Here is the definition of p-value from Wikipedia:     The p-value is the probability of obtaining a test statistic at least   as extreme as the one that was actually observed, assuming that the   null hypothesis is true. ()   My first question pertains to the expression "at least as extreme as the one that was actually observed." My understanding of the logic underlying the use of p-value is the following: If the p-value is small, it's unlikely that the observation occurred assuming the null hypothesis and we may need an alternative hypothesis to explain the observation. If the p-value is not so small, it is likely that the observation occurred only assuming the null hypothesis and the alternative hypothesis is not necessary to explain the observation. So if someone wants to insist on a hypothesis he/she has to show that the p-value of the null hypothesis is very small. With this view in mind, my understanding of the ambiguous expression is that p-value is $\min[P(X&lt;x),P(x&lt;X)]$, if the PDF of the statistic is unimodal, where $X$ is the test statistic and $x$ is its value obtained from the observation. Is this right? If it is right, is it still applicable to use the bimodal PDF of the statistic? If two peaks of the PDF are separated well and the observed value is somewhere in the low probability density region between the two peaks, which interval does the p-value give the probability of?  The second question is about another definition of p-value from Wolfram MathWorld:     The probability that a variate would assume a value greater than or   equal to the observed value strictly by chance.   ()   I understood that the phrase "strictly by chance" should be interpreted as "assuming a null hypothesis". Is that right?  The third question regards the use of "null hypothesis". Let's assume that someone wants to insist that a coin is fair. He expresses the hypothesis as that relative frequency of heads is 0.5. Then the null hypothesis is "relative frequency of heads is not 0.5." In this case, whereas calculating the p-value of the null hypothesis is difficult, the calculation is easy for the alternative hypothesis. Of course the problem can be resolved by interchanging the role of the two hypotheses. My question is that rejection or acceptance based directly on the p-value of the original alternative hypothesis (without introducing the null hypothesis) is whether it is OK or not. If it is not OK, what is usual workaround for such difficulties when calculating the p-value of a null hypothesis?     I posted a new  that is more clarified based on the discussion in this thread. On this site I see hundreds if not a thousand questions being asked about issues with a Wireless LAN adapter not being detected/recognized by Ubuntu. Some mainstream adapters appear to be utterly broken in Linux support, while others just require some simple steps to get it to work.  The options to get it to work appear to be infinitely huge and I have no clue where to get started!  What is considered 'best practice'? What order of things to try is most efficient in terms of time, effort and imposes minimal risk to my Ubuntu installation? Please help me save time and guide me what to do, step by step. You see him for a split second in the final scene with the Final Order and he has kind of a white beard. I can't find any reference online except Nien Nunb from ROJ.