# Beta test for math rendering

#1

I just enabled the new discourse math plugin! This is a beta test for now, so please report all problems you encounter here.

Latex math formulas surrounded by $ or $$ should render correctly. E=mc^2 Best, Valentin PS: I am on vacation till the 25th so please be patient if I don’t answer immediately. #2 inline: E = mc^2 display: E = mc^2 #3 \frac{\partial u} {\partial t }+ u \cdot \nabla u = - \nabla p + \nu \nabla^2 u \nabla \cdot u = 0 sweet! #4 In the preview, surrounding by pairs of dollar signs doesn’t work, but single dollar signs are fine. E = mc^2 #5 It seems that $$ can only used as blocks and not inline. You can find more information about the plugin at: #6 f_n(x) = n \cdot \begin{cases} f(x - 1) & \text{if } x > 0, \\ 1 & \text{otherwise}. \end{cases} \square f^A = -\rho(\varphi, \vec\varrho, \boldsymbol\vartheta) \hspace{2em} \forall A \notin \{\ddot x | \ddot x > 0, x \in \mathbb J\} The preview doesn’t update automatically for me if the first line is a $\$ block.

#7

i\hbar\frac{\partial}{\partial t} \Psi(\mathbf{r},\,t) = -\frac{\hbar^2}{2m}\nabla^2 \Psi(\mathbf{r},\,t) + V(\mathbf{r})\Psi(\mathbf{r},\,t)

R_{\mu \nu} - {1 \over 2}g_{\mu \nu}\,R + g_{\mu \nu} \Lambda = {8 \pi G \over c^4} T_{\mu \nu}

#8

bc(v) = \frac{1}{\mathcal{N}} \sum_{s \neq t \neq v} \frac{\sigma_{st}(v)}{\sigma_{st}}

bc(v) = \frac{1}{\mathcal{N}} \sum_{s \neq t \neq v} \frac{\sigma_{st}(v)}{\sigma_{st}}

Just a note: no need to escape backslashes.

#9

### Yang-Mills

\mathcal{L} \supset i\bar{\psi}_{a}{\cancel{D}^{a}}_{b}\psi^{b} - m\bar{\psi}_{a}\psi^{a} - \frac{1}{4}G_{\mu\nu}^{a}G^{\mu\nu}_{a}

Z = \int\mathcal{D}\psi\mathcal{D}\bar{\psi}\mathcal{D}A ~ e^{-\int d^{n}x ~ \mathcal{L}[\psi,\bar{\psi},A]}

### Einstein-Hilbert

S \supset \int d^{4}x\sqrt{-g}~M_{P}^2(R-2\Lambda)

### Stokes Theorem

\int_{V} d\omega = \int_{\partial V}\omega

### Bosonic String

S = \int d^{2}\xi \sqrt{-g} g^{ab}\partial_{a}X^{\mu}\partial_{b}X^{\nu}G_{\mu\nu}(X)

### Celebration

Yay!

#10

You have never used an integration by parts? You could not be more wrong

#11

(It was a joke. It is, in fact, arguably one of the most important theorems in mathematics. Certainly in calculus. Also I might not be remembering the exact quote, I remember Carroll making some comment to this effect in “Spacetime and Geometry” but, again, it was a joke about differential forms.)

I’ve deleted this since I don’t want to be accused of misrepresenting my favorite textbook .