How do I export model with shaders?
.fbx export why there are no materials or textures?
Why is the Yang-Mills gauge group assumed compact and semi-simple? What is the motivation for including the compactness and semi-simplicity assumptions on the groups that one gauges to obtain Yang-Mills theories?  I'd think that these hypotheses lead to physically "nice" theories in some way, but I've never, even from a computational perspective. really given these assumptions much thought. Auto Increment Problem in Mysql What happens when a photon hits a beamsplitter? Yesterday I read that we can affect the path and the 'form' (particle or wave) of a photon after the fact ().  Part of what is puzzling me is the beam-splitter. Are the individual photons actually being split into two new photons of lesser energy?  This  implies that you cannot split a photon but it seems that beam splitters do exactly that. How can I get rid of ants in an environmently friendly way? MySQL: Allow both remote AND local connections Iterating over array of objects javascript - odd behaviour? I know questions on the "hot" tab of a site homepage are based on some sort of views/velocity criteria, but does anyone know the actual algorithm used?  Background: I was considering a feature-request about the "hot" tab, but I don't have enough information to speak about it intelligently. Prove that $\lim \limits_{n \to \infty} \frac{x^n}{n!} = 0$, $x \in \Bbb R$. Why is     $$\lim_{n \to \infty} \frac{2^n}{n!}=0\text{ ?}$$   Can we generalize it to any exponent $x \in \Bbb R$? This is to say, is     $$\lim_{n \to \infty} \frac{x^n}{n!}=0\text{ ?}$$     This is being repurposed in an effort to cut down on duplicates, see here: Coping with  duplicate questions.  and here: . Is there a standard pronunciation for gender-neutral -@ or -x More and more I see, especially in activist communities, Spanish-derived words ending in x or @ in order to neuter the gendering inherent in the original language. For example: latinx (or latin@) as opposed to latina and latino. How, though, are these endings pronounced? Please provide evidence of how this orthography is most commonly pronounced. Note 1: I recognize this is in an English Language site, rather than a Spanish language site, but this phenomenon is very much happening in English, albeit with Spanish loan words. Therefore the question is relevant to non-Spanish-speaking English speakers. Note 2: A question like this can lead to politically charged or, at least, sarcastic comments. Please refrain from bringing in your biases for or against. Note 3: This question is not seeking opinions as to how some people pronounce the suffixes. Answers should address evidence of a developing orthodoxy in pronunciation. Why do universities have to spend money on journals? Obviously this is a question in the light of the recent Elsevier boycott. Currently we do have an arXiv, maintained by academia and where researchers regularly upload parts of their work. In such a case,   Why do universities spend lots of money to publish in third-party journals?   The question especially applies to journals that operate with a rigorous profit motive. The subscription is very high, so wouldn't publishing in such journals affect the paper's citation count and deter the spread of knowledge about the work within academic circles?   Why should not universities collaborate to create free, open access, peer-reviewed journals?   Moreover, given the need to conserve paper, why should journals spend on printing research papers? Wouldn't an online version suffice, as most people use only local computer printouts anyway? In other words, why can't we have a Wikipedia-like system of sharing research knowledge, having properly established standards for such journals? DIY.Blogoverflow.com is redirecting to stackexchange.com/blogs I seem to be the unlucky recipient of a 302 redirect from the blogoverflow site, and was asked by Grace Note to upload the issue here. While trying to access the DIY blog site, I'm getting bounced over to the generic SE blog page. I've tried resolving this by changing DNS servers, clearing my browser cache, and trying a different browser. Others going to the same site aren't experiencing the issue, but I'm at a loss for what's different on my system that would cause this. Here's the wget output of the redirect:  --2014-02-18 14:59:28--  http://diy.blogoverflow.com/ Resolving diy.blogoverflow.com (diy.blogoverflow.com)... 67.228.172.87 Connecting to diy.blogoverflow.com (diy.blogoverflow.com)|67.228.172.87|:80... c onnected. HTTP request sent, awaiting response...    HTTP/1.1 302 Found   Date: Tue, 18 Feb 2014 19:59:28 GMT   Server: Apache   X-Powered-By: PHP/5.4.22   Location: http://stackexchange.com/blogs   Content-Length: 1001   Connection: close   Content-Type: text/html; charset=UTF-8 Location: http://stackexchange.com/blogs [following] --2014-02-18 14:59:28--  http://stackexchange.com/blogs Resolving stackexchange.com (stackexchange.com)... 198.252.206.140 Connecting to stackexchange.com (stackexchange.com)|198.252.206.140|:80... conne cted. HTTP request sent, awaiting response...    HTTP/1.1 200 OK   Cache-Control: private   Content-Type: text/html; charset=utf-8   X-Frame-Options: SAMEORIGIN   Date: Tue, 18 Feb 2014 19:59:28 GMT   Content-Length: 16775 Length: 16775 (16K) [text/html] Saving to: ‘index.html.1’       0K .......... ......                                     100% 1.04M=0.02s How do I set up a Cron job? I met this equation frequently in Guass-Newton optimizations. But I dont understand why the left and right side of the equation can be equal.  Lets say the Jacobian is $2$ by $2$   and Hessian is $$\begin{bmatrix}\frac{\partial^2f_1}{\partial^2 x_1 } &amp; \frac{\partial^2f_1}{\partial^2 x_2  } \\ \frac{\partial^2f_2}{\partial^2 x_1 } &amp; \frac{\partial^2f_2}{\partial^2 x_2  }\end{bmatrix}$$   But the right hand side of the equation is  $$J^TJ =\begin{bmatrix} \left( \frac{\partial f_1}{\partial x_1} \right)^2 + \left( \frac{\partial f_2}{\partial x_1} \right)^2  &amp;  \frac{\partial f_1}{\partial x_1}\frac{\partial f_1}{\partial x_2} +\frac{\partial f_2}{\partial x_1}\frac{\partial f_2}{\partial x_1}\\ \frac{\partial f_1}{\partial x_1}\frac{\partial f_1}{\partial x_2} +\frac{\partial f_2}{\partial x_1}\frac{\partial f_2}{\partial x_1} &amp;\left( \frac{\partial f_1}{\partial x_2} \right)^2 + \left( \frac{\partial f_2}{\partial x_2} \right)^2\end{bmatrix} $$  Why can these two be equal as presented in papers? I am trying to animate in 2d. I do it with planes that have textures on them. I recently came up with the idea of having a plane with an image sequence of mouths because animating actual lip syncing by hand takes too long and isn't really necessary for what I'm trying to acomplish. However, when playing back the animation in textured viewport shading the animated texture stays at the last frame until the animation stops. I can use the arrow keys and it works fine as well as scrubbing through the timeline, just not when playing back the animation with alt+a. Can anyone help me with this problem? Remove numbering from Section and Subsection Singular or plural verb after parenthetical material containing a conjunction? I would tend to say     Sara (and all of us) have a lot to think about now.   ...but it occurs to me that if I remove the parenthetical it's clearly incorrect. Is it proper to say     Sara (and all of us) has a lot to think about now.   ...that sounds really strange to my ear.  Also, does it change the rules in any way if I use an em dash, e.g.     Sara–and all of us–have a lot to think about now. How can I prove that if $n$ is even then $n^2$ is even and if $n$ is odd then $n^2$ is odd? How do I disable System Integrity Protection (SIP) AKA "rootless" on macOs [OS X] Proof that the largest eigenvalue of a stochastic matrix is $1$ In a modern SPFx Web Part, how do I check if a URL exists?