User:Fatka/sandbox

Signature testing
Fatka (talk contribs) Fatka (talk · contribs) Fatka (talk · contribs) -Fatka (talk · contribs)

-- Fatka (talk · contribs)

-- Fatka (talk · contribs) 01:26, 10 November 2008 (UTC)

01:26, 10 November 2008 (UTC)

- Fatka (talk · contribs) 19:03, 10 November 2008 (UTC)

- Fatka (talk · contribs) 06:38, 25 March 2009 (UTC)

LaTeX testing
$$\not\equiv $$

&equiv; &rArr;

done using $$ \begin{align} bla bla & = bla bla & = bla bla \end{align} $$

$$ \begin{align} \hat H & = \frac{\mathbf{\hat p_1}^2}{2m_e}+\frac{\mathbf{\hat p_2}^2}{2m_e}-\frac{Ze^2}{|\mathbf{r_1}|}-\frac{Ze^2}{|\mathbf{r_2}|}+\frac{e^2}{|\mathbf{r_1-r_2}|}\\ & =\left[\frac{\mathbf{\hat p_1}^2}{2m_e}-\frac{\tilde{Z}e^2}{|\mathbf{r_1}|}+\frac{\mathbf{\hat p_2}^2}{2m_e}-\frac{\tilde{Z}e^2}{|\mathbf{r_1}|}-\frac{\tilde{Z}e^2}{|\mathbf{r_2}|}\right]+\left[\frac{(\tilde{Z}-Z)e^2}{|\mathbf{r_1}|}+\frac{(\tilde{Z}-Z)e^2}{|\mathbf{r_2}|}\right]+\frac{e^2}{|\mathbf{r_1-r_2}|}\\ \end{align} $$

$$ \begin{alignat}{2} bla bla & = bla bla & = bla bla \end{alignat} $$

$$ \begin{alignat}{2} \hat H & = \frac{\mathbf{\hat p_1}^2}{2m_e}+\frac{\mathbf{\hat p_2}^2}{2m_e}-\frac{Ze^2}{|\mathbf{r_1}|}-\frac{Ze^2}{|\mathbf{r_2}|}+\frac{e^2}{|\mathbf{r_1-r_2}|}\\ & =\left[\frac{\mathbf{\hat p_1}^2}{2m_e}-\frac{\tilde{Z}e^2}{|\mathbf{r_1}|}+\frac{\mathbf{\hat p_2}^2}{2m_e}-\frac{\tilde{Z}e^2}{|\mathbf{r_1}|}-\frac{\tilde{Z}e^2}{|\mathbf{r_2}|}\right]+\left[\frac{(\tilde{Z}-Z)e^2}{|\mathbf{r_1}|}+\frac{(\tilde{Z}-Z)e^2}{|\mathbf{r_2}|}\right]+\frac{e^2}{|\mathbf{r_1-r_2}|}\\ \end{alignat} $$