In the Harry Potter series, wouldn't the Elder Wand belong to Neville, not Harry? Since it belonged to Dumbledore, then Snape killed him, then Nagini killed Snape, then Neville killed Nagini, wouldn't it belong to him instead?
Voldemort ordered Nagini to kill Snape in hopes of claiming the Elder Wand's ownership.  Let's suppose that Snape was indeed the owner.  In this scenario, would the Elder Wand's ownership truly pass to Voldemort?  I ask this because, after all, the one who overpowered Snape was Nagini, not Voldemort.   Voldemort ordered Nagini to kill Snape. However, this would be equivalent to ordering a Death Eater to kill Snape, in which case the Death Eater would gain the ownership - in a similar manner, Nagini is the murderer. Nagini isn't a "spell": remember how Draco summoned a snake to attack Harry back at CoS? If that snake kills Harry, I'd imagine that Draco gains the ownership (if Harry had the Elder Wand) because that snake was a "spell" casted by Draco - but this time is different, because Nagini isn't a "spell" casted by Voldemort, but rather an actual third-party creature.   The curious thing is that Voldemort did cast some sort of spell (he flicked his wand), which I think caused Nagini's barrier to break so Nagini could kill Snape. In some way, Voldemort did provoke Snape's death - however, it was mostly indirectly.  So, would the ownership pass to Nagini or to Voldemort? If it passes to Nagini, would the Elder Wand's "ownership cycle" end, or would it continue if Voldemort decides to kill Nagini?    The simplified version of this question is: if an animal kills the owner of the Elder Wand, what happens to its ownership?
For some reason I can't boot my system. I get an error akin to Operating System Not Found.   I tried bootrepair, and that didn't work. So then I decided I would just save my personal files, wipe everything, and reinstall.   But in the live session, when I go to the /home directory, my username folder isn't there, instead it goes to the Live CD's desktop and other directories. Is there some other error occurring? Is there a way to recover the files? How do I calculate the determinant of the following $n\times n$ matrices  $$\begin {bmatrix} 0 &amp; 1 &amp; \ldots &amp; 1 \\ 1 &amp; 0 &amp; \ldots &amp; 1 \\ \vdots &amp; \vdots &amp; \ddots &amp; \vdots \\ 1 &amp; 1 &amp; ... &amp; 0 \end {bmatrix}$$  and the same matrix but one of columns replaced only with $1$s?  In the  above matrix all off-diagonal elements are $1$ and diagonal elements are $0$. If $\mathop{\mathrm{Spec}}A$ is not connected then there is a nontrivial idempotent After reading  and reading the comments on the page, one person was wondering if it would be possible to use the Physical Device Object Names of other hardware such as the microphone to find out the names of processes using that device.  I tried the same approach, but so far it only seems to work for the webcam. Is there any other way I could get this to work in ?      UPDATE:  The Lifehacker post was about finding out which Windows process is currently using your webcam.  is how they went about doing it:        Start Device Manager (WIN+R &rarr; "devmgmt.msc" &rarr; OK)   Find your webcam among the list of devices (check under Imaging Devices)   Open the properties window of the device and switch to the Details tab  (Right click &rarr; Properties &rarr; Details)   In the dropdown menu, select Physical Device Object Name and copy the string(Right click &rarr; Copy)   Download    Make sure you have opened Process Explorer in Administrator Mode(File &rarr; Show Details for All Processes)   Hit CTRL+F and enter the string you copied earlier(it should be something like \Device\000000XX)   Hit the Search button and you should see a list of processes using the webcam(if there are any) How do I remove the Me-User-Indicator from the Panel? How do I remove the Me-User-Indicator from the Panel?  The indicator contains two items: the written user name and the icon of a human. Related:   I know I must describe my past and current research in my personal/research statement or statement of purpose. But do I use technical terms?  I was given the advice that since the people reading my statement are mathematicians (I am applying to US for applied mathematics), they should know what I am talking about.  Although I am applying to applied mathematics, it would also be nice to hear from other fields (biology, computer science, engineering etc) about this. How to copy text out of a PDF without losing formatting? Setting up a download page requiring a user to fill a form before downloading anything In the Drupal site I'm setting up, there's a Download page containing several links to download softwares.   What is the best way to "bind" the softwares to the page, put them anywhere online and place a direct link in the page?   Does anyone know a module that would show a contact form when a user clicks one of the "Download" buttons, preventing him from downloading unless he properly completes the form?  Our goal is to receive the contact information of any person downloading our software. How is The Wall bypassed? Two paths that show that $\frac{x-y}{x^2 + y^2}$ has no limit when $(x,y) \rightarrow (0,0)$ Letter of recommendation from Post-Doc or Professor Force JSF to process, validate and update readonly/disabled input components anyway What is a concise function that formats a (String) decimal into a currency format in Apex? goal: write the most concise function that formats a (String) decimal into a currency format in Apex. Feel free to trainwreck the code for points, I've kept mine exploded for readability purposes. Hitting arrow keys adds characters in vi editor When I tried to use arrow keys in insert mode in vi editor the following characters are being inserted in the editor:   for ↓ I get B, for ↑ I get A, for ← I get D, for → I get C.   Please help me in resolve this problem. Movement arrow in gloss Are there any drawbacks to legacy BIOS as opposed to UEFI? Are there any drawbacks to installing Ubuntu 13.10 (and soon 14.04) in Legacy BIOS instead of UEFI?  I have installed 13.10 64bit in Legacy by mistake and was just wondering if it would hurt anything to simply leave it there as is?  EDIT  Everything seems to be running just fine in Legacy and all my drivers work. How to know that your machine learning problem is hopeless? In the simple harmonic oscillator model, we talk about the angular frequency and I understand that this tells something about the instantaneous angular velocity of the object. For example, a simple pendulum. But what does this mean when we apply this concept to an object attached to a spring that behaves as a simple harmonic oscillator? There is no instantaneous circular motion for the object, so how can we relate the angular frequency to a system like this? What's the term for using the wrong word because it sounds the same? I was reading about various terms for incorrect words, but they didn't seem to fit.  I saw a post where someone said "what do you like to do when you're board?".  That kind of thing.  Also, would that be considered a mistake in grammar?  I didn't think so, but my friend insists it is.  I'm not sure if there even is a word for that kind of mistake, but was just curious about it.  Thanks! Multivariable limit proof: $\lim\limits_{(x,y)\rightarrow (0,0)}\frac{\left|x\right|^a\left|y\right|^b}{\left|x\right|^c + \left|y\right|^d} = 0$ I have some trouble with this: Show that if $a, b \ge 0$, $c, d &gt; 0$ and $\frac{a}{c} + \frac{b}{d} &gt; 1$ then   $$\lim_{(x,y)\rightarrow (0,0)}\frac{\left|x\right|^a\left|y\right|^b}{\left|x\right|^c + \left|y\right|^d} = 0$$  we were not really shown how to evaluate multivariable limits other than trying different paths, which wouldn't work when the limit exists, or by applying the squeeze theorem which is my initial plan. Unfortunately I cannot find a proper bound for the denominator and so I am quite lost right now. Any help would be appreciated.