Is this corruption a JS/CSS bug in stack exchange?
Stack Overflow duplicated layer bug
How to smooth shade an object while retaining hard edges? I frequently come to the problem of having a mesh with parts I would like to render smooth and "hard" edges connecting them.   How can I set the mesh to show the sharp edges but render everything else smooth?  In the example I would like the sides of the individual cylinders render smooth but the intersection between bottom and top to be sharp/flat Cannot find my keyboard layout I'm in Belgium (french part) and I cannot find the proper keyboard layout in Settings > Region and Languages > Input Sources.  the closest I found is the french (AZERTY) one but for the symbols such as ! and _ it's not the same keys...  what can I do to solve it ?  Thank you. How is it possible that quantum phenomenons (e.g. superposition) are possible when all quantum particles are being constantly observed? I don't understand how quantum mechanics (and therefore also quantum computers) can work  given that while we work with quantum states, particles that this quantum state consist of cannot be observed, which is the most fundamental requirement.  If I am not mistaken, by "observed" we mean interaction with any other particle (photon, gluon, electron or whatever else). So my very important questions:   Aren't the particles this quantum state consists of interacting with each other? Why doesn't that cause the state to collapse? Aren't all particles in the universe interacting with Higgs field and gravitons etc? Why doesn't that cause every quantum state to collapse?   I feel there is something very fundamental in quantum mechanics that I am not aware of, hence I would be very pleased to have these questions answered. What is a Pythonic way to pad a numeric string with zeroes to the left, i.e. so the numeric string has a specific length? How to properly restart unity? I keep on experiencing weird bugs. These usually start after a few hours of use. Sometimes the dash starts opening under every open window (becomes only visible on desktop, but I still can search and open anything with the enter key while it's not visible). Also, there are other minor annoyances, such as random places (especially maximized Chrome, tabs area) after navigating between programs with alt+tab can't be clicked with the mouse. Switching back and forth fixes this.  I cannot use  compiz --replace   since after that, all of the app indicator icons are gone (only teamviewer stays). Skype, network, languages, sound (also keyboard sound up/down stops working) and date are gone. Restarting unity-panel-service does not help.  Any thoughts on how to resolve these? What are $x$, $y$ and $z$ if $\frac{x}{y + z} + \frac{y}{x + z} + \frac{z}{x + y} = 4$ and $x$, $y$ and $z$ are whole numbers? What are $x$, $y$ and $z$ if $$\dfrac{x}{y + z} + \dfrac{y}{x + z} + \dfrac{z}{x + y} = 4$$ and $x$, $y$ and $z$ are whole numbers?  MY ATTEMPT  Let $u = x + y + z$.  Then the equation can be rewritten as $$\dfrac{x}{u - x} + \dfrac{y}{u - y} + \dfrac{z}{u - z} = 4$$  Suppose I set $$1 = \dfrac{x}{u - x} = \dfrac{y}{u - y}$$ and $$2 = \dfrac{z}{u - z}.$$  Then I get $$x = y + z$$ $$y = x + z$$ $$z = 2(x + y),$$ so that $$z = 0 = x + y,$$ which is impossible.  Next, suppose I set $$\dfrac{4}{3} = \dfrac{x}{u - x} = \dfrac{y}{u - y} = \dfrac{z}{u - z}.$$  Then I get $$4(u - x) = 3x$$ $$4(u - y) = 3y$$ $$4(u - z) = 3z$$ so that $$12u - 4(x + y + z) = 3(x + y + z)$$ which implies that $$12u = 7(x + y + z) = 7u$$ from which it follows that $$u = 0.$$ This is, again, impossible.  Alas, here is where I get stuck.  Any hint(s) will be appreciated. Is phonetic typing for Tamil available in Ubuntu 12.04?  How can I install it? , I shouldn't need to vote down or flag the answer, because the question itself is a dog.      Users should be allowed to also enable the "I'm done" button by down voting, close voting or flagging the question rather than directly taking action on the answer.    Currently, I have to click on the question's title, close or down vote it in the new tab, then go back to the review page, and click "Not sure" to continue on my adventure. Why isn't persistence working on Lubuntu 12.04 Live-USB? One of the achievements for the Thieves Guild says "Restore the Thieves Guild to its former glory."  Brynjolf doesn't say anything to me, I can't seem to find Karliah, and as far as I can tell, I am finished with the plotline quests for the Thieves Guild. All I have left available are repeatable quests from Vex and Delvin.  How can I get this achievement? Get width of a given text as length Why do we make a distinction between derivatives and partial derivatives? I've placed a command block making it day all the time. I want to turn it off, but I've lost it. What's the quickest way to find it? Relation bewteen Hessian Matrix and Curvature According to ,  It describes the local curvature of a function.   AFAIK, for one-variable function $f(x)$, its local curvature is  $$\kappa = \frac{|f''|}{(1 + f'^2)^{3/2}},$$ and its Hessian matrix is  $$\mathcal{Hess}(f) = [f''],$$ right? And here is my problem, I think the local curvature is not just described by its Hessian matrix, because $f'$ also has its role in it, doesn't it?  And furthermore, for 2-variable function $f(x,y)$, its Hessian matrix is  $$\mathcal{Hess}(f) = \left[ \begin{array}{cc} f_{xx}'' &amp; f_{xy}'' \\ f_{xy}'' &amp; f_{yy}'' \end{array} \right].$$ How does it relate to the local curvature of $f(x,y)$? Install 0bda:f179 Realtek Semiconductor Corp. (rtl8188fu), or Netgear rtl8812au USB WiFi adapters 19 DEC 2019 - I really, really wanted to use the Cinnamon desktop to set up a new system my 83-year-old Dad could navigate. I struggled to get any USB WiFi device working with Debian using Cinnamon, gave up and installed Ubuntu, but still struggled (I think) because I had immediately changed to the Cinnamon desktop before attempting to get the WiFi device set up.  It just kept prompting for the password, no matter what fixes I tried. Not sure if Cinnamon was the problem, or if I just hadn't found the right solution online. $\mathbb{Q}(\sqrt p_{1}+\sqrt p_{2})=\mathbb{Q}(\sqrt p_{1},\sqrt p_{2})$ for $p_{1},p_{2}$ primes. What is object serialization? How do I remove repeated elements from ArrayList? What is the difference between POST and PUT in HTTP? According to , POST is used to create a resource:  The POST method is used to request that the origin server accept the entity enclosed in the request as a new subordinate of the resource identified by the Request-URI in the Request-Line.  According to , PUT is used to create or replace a resource:  The PUT method requests that the enclosed entity be stored under the supplied Request-URI. If the Request-URI refers to an already existing resource, the enclosed entity SHOULD be considered as a modified version of the one residing on the origin server. If the Request-URI does not point to an existing resource, and that URI is capable of being defined as a new resource by the requesting user agent, the origin server can create the resource with that URI.  So which HTTP method should be used to create a resource? Or should both be supported? Inspired by  which states limb loss as a recurring theme, I started thinking about the final lightsaber battle. After watching The Force Awakens the second time, I was not sure if      Kylo Ren   lost a limb or just lost his lightsaber. We definitely see      Rey slash at Ren’s right hand.   So knowing that context:      Did Kylo Ren actually lose his arm/hand?