Участник:Nebaruzdin/Math test

1 Inline math

The matrix $A$ is stored row-wise in a one-dimensional array of length $\frac{n (n + 1)}{2}$.

2 Display math

$\sum_{p = 1}^{i - 1} l_{ip} l_{jp}$

3 LaTeX environments

$\begin{equation} \label{eq:fourier} \phi_{i,j,k}=\frac{1}{N_x} \sum_{l=0}^{N_x-1} \left[ e^{2\pi \overline{i}\left(\frac{il}{N_x}\right)} \frac{1}{N_y} \sum_{m=0}^{N_y-1} \left[ e^{2\pi \overline{i}\left(\frac{jm}{N_y}\right)} \frac{1}{N_z} \sum_{n=0}^{N_z-1} \Phi_{l,m,n}e^{2\pi \overline{i} \left(\frac{kn}{N_z}\right)}\right]\right]. \end{equation}$

In equation $\eqref{eq:fourier}$, we find the Fourier transform.