Advanced Formulae in Latex

TechBloxWriter — Thu, 27 May 2010 17:06:39 +0000

Remember when you couln’t think of the correct commands to write a certain formula in latex because it’s been a year since you did it the last time? This might help you find the light.

Vectors

Using

1	\newcommand{\ve}[1]{\mbox{\bf #1}}

in your preamble, you can easily write vectors as follows:

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\begin{equation}
\mathscr{L}(\ve v_i) = \ve v_i - \frac{1}{\left| N_i \right|} \sum_{j\in N_i} \ve v_j
\end{equation}

Matrices

You always need matrices. Try this code:

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\begin{equation}
\begin{pmatrix}
A & A_k
\end{pmatrix}
\begin{pmatrix}
D \\
D_k
\end{pmatrix}
= 0
\end{equation}

Multi-case definition

This code comes in handy to define certain funtions or matrices:

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\begin{equation}
A_{ij} = \left\{
\begin{array}{l l}
1 & \quad (i,j) \in K \\
0 & \quad \text{otherwise} \\
\end{array}
\right
\end{equation}

TechBlox » vector

Advanced Formulae in Latex

Vectors

Matrices

Multi-case definition