I'm making a presentation in LaTeX using beamer. I have typed up the Navier-Stokes equations, but for some reason many of the variables (the superscripts and subscripts, Y, T, x, etc.) are not italicized. Why might this be happening?    Example:  \documentclass{beamer}  \usepackage{graphicx} \usepackage{amsmath} \usepackage{xmpmulti}  \begin{document} \title{\LARGE title} \author{author}  \frame{\titlepage}   \frame{\frametitle{Table of contents}\tableofcontents}   \section{Section}  \subsection{Navier-Stokes Equations} \frame{\frametitle{Navier-Stokes Equations}     \begin{itemize}         \item The compressible, reacting Navier-Stokes equations for an ideal gas can be written as     \end{itemize}     \begin{align*}     \frac{\partial \rho^d}{\partial t^d} + \frac{\partial\rho^d u_{j}^d}{\partial x_{j}^d}      &amp;= 0,\\     \frac{\partial{\rho^d Y^d_k}}{\partial t^d} + \frac{\partial{\rho Y^d_k u^d_j}}{\partial x^d_j}      &amp;= \frac{\partial}{\partial x^d_j}\left(\rho^d D^d_k \frac{\partial Y^d_k}{\partial x^d_j} \right)+\dot{\omega}^d_k,\\     \frac{\partial \rho^d u_{i}^d}{\partial t^d} + \frac{\partial\rho^d u_{i}^du_{j}^d}{\partial x_{j}^d}     &amp;= -\frac{\partial p^d}{\partial x_{i}^d} + \frac{\partial \tau_{ij}^d}{\partial x_{j}^d}, \\     \frac{\partial \rho^d E^d}{\partial t^d} + \frac{\partial (\rho^d E^d+p^d) u_{j}^d}{\partial x_{j}^d}     &amp;= \frac{\partial\tau_{ij}^du_{i}^d}{\partial x_{j}^d} + \frac{\partial}{\partial x^d_j}\left(\mu^d\frac{c^d_p}{Pr}\frac{\partial T^d}{\partial x^d_j}\right)+ \sum\limits_{k=1}^{N}Q^d_k\dot{\omega}^d_k \\      p^d &amp;= \rho^dR^dT^d = \rho^d \frac{R_u}{W^d}T^d     \end{align*} }   \end{document}
In a LaTeX article, the math characters are more "curvy" than the text characters:  \documentclass[12pt]{article} \begin{document}  $x^2 + y^2 = z^2$ \end{document}     In a beamer presentation, the math characters do not have the same curves:  \documentclass{beamer} \begin{document} \begin{frame}  $x^2 + y^2 = z^2$ \end{frame} \end{document}     Question  How can I get the beamer math to look just like the article math?  I would prefer if the solution was a single line (that I could place at the top of my LaTeX file) as opposed to something that needs to appear next to every piece of math.
How long can I store a food in the pantry, refrigerator, or freezer? How do I know if a given food or ingredient I have is still good, or if I should discard it?  How can I best preserve a food or ingredient?     This broad question is intended as a "general reference" question to quickly answer many how long will food keep for? questions. Please feel free to edit this question to expand and clarify as needed. I've been working on some animations recently, and I've noticed that I'm having poor luck with certain things, namely the fact that I don't really use Blender's graph editor very well.  One of the major issues that I have is pretty widespread among 3D graphics programs; when I create an animated object, it defaults to using a curved graph instead of a linear graph, which means that the most movement is at the middle of the animation, and stuff just practically stops near the beginning or the end. While this helps with organic camera movements or such, it's also not what I usually want. Can I set animation curves to default to linear? Can SMT give worse performance than normal CPU? What would be a good term for continuous testing post-deployment? I'm thinking of live production sites here, where there is a continuous community or much content being updated, sort of like a newspaper site or community site (the one I work at is a healthcare improvement company) and we have news articles, programs and so on.  While the underlying code is tested and released there are often production issues that come up, maybe certain pages stop working, style sheets suddenly don't appear like they did due to a service patch or some tweak done to improve production security or performance.  There is Acceptance Testing for when a deployment goes out to make sure things work right, Regression Testing to make sure nothing has been broken since previous releases.  Considering we've done these types of tests and things are working fine what would you call testing, or checking, the site to make sure things still work fine?  To be sure new pages are being crawled for search indexing?  To check that newly added pages are using plug-ins correctly?  Or so on.  My manager and I were discussing some issues that have cropped up and decided we needed to do something like this, but then to sort of note it in our status reports we didn't really have a name for it.  Anyone done this and have a term that might be good?  Or would you consider it covered by something like Continuous Acceptance Testing or some such term? $\lim_{x \to 0} f(x)=\frac{\tan 3x}{\tan 2x}$ without L'Hospital Solving minimization problem $L_2$ IRLS (Iteration derivation) In the article ''' Chartrand, Rick, and Wotao Yin. "Iteratively reweighted algorithms for compressive sensing." Acoustics, speech and signal processing, 2008. ICASSP 2008. IEEE international conference on. IEEE, 2008. '''  It is given that one iteration of  iterative reweighed least squares problem can be written as $\min \sum_{i=1}^N w_i u_i^2 $ subject to $\Phi u = b  $ which has a closed form solution given as   $u^{(n)} = Q_n \Phi^T (\Phi Q_n \Phi^T)^{-1} b$. where $Q_n$ is the diagonal matrix containing entries $1/(|u_i^{(n-1)}|^2 + \epsilon )^{1/2} $ And the closed form equation can be derived from the Euler Lagrange equation. Can someone please help me to get the derivation of the iteration?\ I understood till $$\min_u u^TWu+λ|| \Phi u−b||_2^2 $$  which can be written as $(\bigtriangledown=0)$ which gives $$ W u + \lambda (\Phi^T \Phi u - \Phi^T b) =0$$ Why is a suspicious program draining my battery with GPS usage? How to know the model has started overfitting? miktex-makepk - PK font HieroB could not be created I am depressed, after trying to install HieroTeX with MikTex 2.9 and TeXnicenter for four weeks without succeeding. I installed hieroglf, it works perfectly, but has only 60 signs. I followed the main advices, so I created a folder texmf-Local , throwed in  the content of HieroTex3.5 and Hiero-Type1.3.1.4 , put the axmf , mf and sty files where I think they belong, put that directory  texmf- local in the path searched by Miktex, updated map and file databases fo Miktex. Still the files can be compiled but Hiero fonts are not found.  Te main errors I can detect from log are the following:   " No file egypto.sty.tex found" and  "  "miktex-makepk - PK font HieroB could not be created." and similar for other fonts Thanks What advantages does manual mode have over aperture priority mode? I'm wondering what are the most compelling reasons to switch to manual mode on my DSLR. I mostly just use aperture priority mode so I have good control over the depth of field combined with an awareness of the shutter speed that goes with it. My photography is mostly done wandering about with camera in hand, or occasionally on a tripod. I don't do studio photography and I just use the natural light.  I did learn how to take photos manually (with an Olympus OM-1) so I know how to do it, but I enjoy the extra convenience of aperture mode, particularly being able to take the photo quickly and capturing the moment rather than fiddling with dials and missing the shot.  So what would be some key advantages of using manual mode for my sort of photography that are worth the (small amount of) extra hassle involved?  And do you have any tips to minimise the downside (other than practicing to be quick)? Any examples of life forms on Earth that could have survived on Mars or Moon? Why does magnetic force vary in proportion to the cube of the distance instead of the square? Magnetic forces vary from gravity and electromagnetic radiation (such as light) in that gravity and radiation diminish by the square of the distance from the source, but magnetism diminishes by the cube of the distance.  Why is this? I am trying to make a snowball that triggers a command when it hits a player in 1.15, but I don't know how to do that. When I do execute at @e[type=snowball] run gamemode spectator @a[distance=..2] it only runs the command if it goes right next to them. Target filesystem doesn't have requested /sbin/init Suppose there are several journals with the same impact factor. Is it better to submit my papers to one of them or each time I finished a manuscript it is better to submit to an equally good journal that I have not published in yet.  I am early in my career and I already published two papers in the same journal and I am going to finish my third paper, which potentially can be published in the same journal as my previous two papers. Is it ethical to use a recommendation letter from a deceased professor? She was a really nice professor and she wrote me a good recommendation letter that resulted in a lot of good results with applications. Recently, this professor died from brain cancer, which was a fast and shocking death for me.  Tomorrow is the deadline for a grant. What should I do? Is it professional to use letters from the deceased? Regulatory bodies and authoritative dictionaries for English Physically Identify the failed hard drive “The group of fifty people {is / are} going to arrive Thursday” - which is preferred? Isn't the following sentence grammatically correct?     The group of fifty people are going to arrive Thursday.   What's wrong with it? Someone said it should be      The group of fifty people is going to arrive Thursday.   Why? People is plural so why is people is better than people are? When using data.stackexchange.com I fail to remember if as [post link] is the correct alias to get the url for the post. Luckily the site has an  link. Unfortunately it is now broken. Can this be fixed?