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21

In your special case we can get away with the built-in \triangledown to represent the lines connecting each vertex. We can also make use of \odot to represent each ringed node: $$\begin{array}{ccc}\hline\text{Case}&\text{Coxeter diagram}&\text{Vertex configuration}\\\hline\text{1 ringed node}&{}^{\boldsymbol p}\hspace{-0.15cm}{\Huge\triangledown}...


11

The \substack command allows one to stack several lines under (and over) an operator symbol like $\sum$, $\prod$ etc. The argument is enclosed in braces, and lines are separated by a double backslash. For example \sum_{\substack{k = 1 \\ k \neq \lfloor n/2\rfloor}}^{n} x_k produces $$\sum_{\substack{k = 1 \\ k \neq \lfloor n/2\rfloor}}^{n} x_k$$ where two ...


7

Your proposed title is Showing $\frac{|\overrightarrow{A_1B}|}{|\overrightarrow{A_1C}|}\frac{|\overrightarrow{B_1C}|}{|\overrightarrow{B_1A}|}\frac{|\overrightarrow{C_1A}|}{|\overrightarrow{C_1B}|}=1$ implies $AA_1$, $BB_1$, $CC_1$ concur (215 characters). Since \newcommand is now local, I believe it is safe to do [Edit: as per Martin's comment, this may ...


6

Try TeXForm[] in Mathematica. TeXForm[Integrate[f(x), {x,-7,\[Pi]}]] which outputs \int_{-7}^{\pi } f(x) \, dx Putting that between dollar signs on this page $\int_{-7}^{\pi } f(x) \, dx$ yields $\int_{-7}^{\pi } f(x) \, dx$. (footnote 1) Between double dollar signs, $$\int_{-7}^{\pi } f(x) \, dx \text{.} $$ It's not perfect, and you may want to tweak ...


3

Instead of using MathJax you can create your table in TeX and then export it as an image to insert into your post. It will display faster and uniformly in all browsers but won't scale since it is a raster image. See https://tex.stackexchange.com/questions/11866/compile-a-latex-document-into-a-png-image-thats-as-short-as-possible for exporting a document as ...


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