LaTeX Tip: Dynkin Diagrams using Tikz

Hi everyone, I’ve include the code for drawing Dynkin diagrams using Tikz package in LaTeX \begin{center} \begin{tikzpicture}[scale=.4] \draw (-1,0) node[anchor=east] {$A_n$}; \foreach \x in {0,…,5} \draw[xshift=\x cm,thick] (\x cm,0) circle (.3cm); \draw[dotted,thick] (0.3 cm,0) — +(1.4 cm,0); \foreach \y in {1.15,…,4.15} \draw[xshift=\y cm,thick] (\y cm,0) — +(1.4 cm,0); \end{tikzpicture} \end{center} \begin{center} \begin{tikzpicture}[scale=.4] \draw (-1,0) node[anchor=east] [...]

Read Full Post »

LaTeX tip: Create a new symbol

Hi people. If you write in LaTeX as much as I do, you could find this tip useful. Since I’m a physicist, I work a lot with Fourier Transformations, which could carry an annoying factor of in the denominator. A notation that might be useful for reducing the typing is the use of the bar [...]

Read Full Post »

Young tableaux in LaTeX

I few month ago I was studying group theory, and the question of How to do Young tableaux in LaTeX pops up. After question some people, ask in groups and searching in CTAN, here I present the answer, ytableau package. Installation Get the zip package ytableau Open a terminal and run the following series of [...]

Read Full Post »

Mathematics, Mathematica and other softwares

This post is more about a personal opinion. Most of the followers of my blog know that I’m a devote Linux user, and that I prefer Open Source than any other software. It is clear than most business people prefer to spend money for a piece of software which get the job done. And additionally, [...]

Read Full Post »

SAGE tip: GRmodule. Day 07.

This code is supposed to be (if some one does the work in the future) located in sage.tensor.differential_form_element. The code presented below is a slight modification of Joris code for differential forms manipulation on SAGE. Needed modules from sage.symbolic.ring import SymbolicRing, SR from sage.rings.ring_element import RingElement from sage.algebras.algebra_element import AlgebraElement from sage.rings.integer import Integer from [...]

Read Full Post »