I am travelling to USA from India and I have two layovers in Germany (Frankfurt and Dusseldorf). Do I need a transit visa or a Schengen visa?   Will I be exempted from Schengen visa, since I hold a valid f1 visa?
I am a Indian citizen in the United States on a F-1 visa.  For the summer break, I am traveling (round-trip) from Chicago to New Delhi via Dusseldorf-Frankfurt by Lufthansa airlines. My onward Journey would be on July - 8 and return Journey on Aug - 11.  My layover will be of 1 hour 10 mins in Frankfurt and 3 hours in Dusseldorf.  I would like to know if I require Category A or Category B Visa. If not, what type of visa do I require for the Schengen visa for my transit. How I can apply for the same?  I tried to find slots in German consulate but all slots are full before my departure date. If I don't get the Schengen visa, I cannot travel and will loose all the fare (since my ticket is a non-refundable ticket). Is there any other way I can tackle this situation.
Find all positive integers $a, b, c$ such that $1/a + 1/b + 1/c = 4/3999$ Find all positive integers $a, b, c$ such that $1/a + 1/b + 1/c = 4/3999$.  The contest is just ended, so you may freely answer. (I did not attend the contest: it is an Italian contest for schools and the groups may ask other people for hints. This is how I got involved, but of course asking on MSE would have been cheating)  I found three solutions: I am explaining below what I did. I would like however to know if there is a more general approach. Duplicate questions in feed, and questions incorrectly marked as unanswered I see duplicate questions in the feed (Why is the book still wanted if Aida has memorized it?) and the question is marked as "unanswered" even though it has an upvoted answer.  I would expect unique questions in the feed, as well as questions with answers to not be marked as unanswered.   App Version: 1.6.3.4 Device: iPhone 6 OS Version: Version 10.2 (Build 14C92) Elmah: How to get JSON HTTP request body from error report Deployment error regarding translations when generating package version The API Sandbox This is the same concept as .  Why do we need more than one? this is in order to test the API, some methods support vectored ids (for example /questions/id1;id2/comments) and for that two sandboxes are needed. Zip folder without including path to folder and require only one argument I'm trying to make a zip function that'll do all the steps I typically do when zipping a file or folder. Say my current directory is ~, and I want to zip a folder named Folder1, whose file path is ~/Folder2/Folder1.  Issuing  cd ~/Folder2 &amp;&amp; zip -r Folder1 Folder1 &amp;&amp; cd -   does exactly what I want. 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I have a list of integers that I would like to convert to one number like:  numList = [1, 2, 3] num = magic(numList)  print num, type(num) &gt;&gt;&gt; 123, &lt;type 'int'&gt;   What is the best way to implement the magic function?  EDIT  I did find , but it seems like there has to be a better way. inverted breve accent in math mode Why does prime factorization for LCM work? A method to finding the LCM of two numbers is to use prime factoring. I know how to do this, but logically why does this work in finding the lcm What are irreducibles in the ring $R$ of entire functions? Possible Duplicate:          I am always confused with the prepositions to use when indicating an event happening at a place. Should I use "at" or "in" or "on"?  For example:     We had our dinner at the McDonalds at/in the shopping centre at/on Sixth   Avenue.   The McDonalds restaurant is in the shopping centre. The shopping centre is located at Sixth Avenue. 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Thinking back, I don't think my education ever covered the difference between them, we just memorized which letters were which. How to disable all div content If I have a legendary creature out, and I make a copy of it (such as by enchanting it with  or making a ), do I get enters-the-battlefield effects from the creature before I have to sacrifice it to the legend rule? My teacher told me that two parallel lines have a point of intersection, it is called Point at infinity. But I I can't understand how it can be true or how was it proved, can someone explain this to me?  Thank you. Question : $$\begin{align}a+b+c &amp;= 0\\ a^3 +b^3 +c^3 &amp;= 12\\ a^5 +b^5 +c^5 &amp;= 40\end{align}$$ Then , $a^4 + b^4 + c^4 = ?$  My try : As a common perspective I just went to find any trick related to it and my first step is as usual as a common man will think $3abc = 12$ and got $abc = 4$ After that I am unable to link it with any other equation I'm having trouble getting basic APA bibliographies to work. The same thing works with nejm style, but changing the style to apa gives errors:  ! Undefined control sequence. &lt;argument&gt; \mkbibdateapalongextra  {year}{month}{day}\iffieldundef {endyear}{...  Package biblatex Warning: Macro 'name:apa:last-first' undefined. (biblatex)                Using \newbibmacro.  Package biblatex Warning: Macro 'name:apa:first-last' undefined. (biblatex)                Using \newbibmacro.   I'm using texlive 2012, as you can see I'm using biber, yes, I reran biber, and also tried delting the .bbl file and rerunning tools. My source markup is:  \documentclass[12pt]{article}  \usepackage[hidelinks]{hyperref} \usepackage[backend=biber,style=apa]{biblatex}  \addbibresource{BibResource.bib}  \begin{document}  test\parencite{ormrod2004human}  \clearpage  \printbibliography  \end{document} Today I gave a .  This results of course in a negative score for today.   Since then I don't get any more notifications for new rep in the new top-bar on meta.    Only after resetting the rep indicator by clicking on it I get new notifications. How can I find out if someone really holds a doctoral degree? We're currently interviewing candidates at my company and I'd like to verify if some of them really have the academic degrees they claim. One in particular claims a doctoral degree from a German university.  I've contacted the university, and the dean wrote back saying that they could not provide this information without the written consent of the individual.  I found this policy rather odd; I would have thought that the granting of a doctoral degree was public information. Is this normal? Is there anything else I can do to find out?  I obtained from the library a copy of the thesis in question but it was in German. I also found through Google  which appears to be a list of dissertations published by that university, but it is unclear whether these are doctoral dissertations or not. The person in question and his dissertation are in that list. How do we know the Taylor expansion for $e^x$ works for all $x$? Or that it's analytic?