For creating/editing with **mathematical expressions** in it, you can use **TeX/LaTeX** syntax.

Here is a sample equation, which is Physics-wise much more complex than its type-setting!

$$\left [ - \frac{\hbar^2}{2 m} \frac{\partial^2}{\partial x^2} + V \right ] \Psi = i \hbar \frac{\partial}{\partial t} \Psi\nonumber$$

### Use (La)TeX code

For creating/editing with **mathematical expressions** in it, you can use **TeX/LaTeX** syntax. Here is a sample equation, much more complex than its type-setting!

$$\left [ - \frac{\hbar^2}{2 m} \frac{\partial^2}{\partial x^2} + V \right ] \Psi = i \hbar \frac{\partial}{\partial t} \Psi\nonumber$$

Using TeX/LaTeX will require some effort in the beginning, but it brings in tremendous flexibility in working with inline mathematical expressions or equations in separate lines.

### MathJax for rendering

The mathematical expressions are rendered with the help of **MathJax **library (after the preview or saved page is loaded). This approach does not involve any image generation for mathematical expressions, and therefore the displayed expressions scale without any problem.

The section 1.1 below shows many sample mathematical expressions.

### Troubleshooting

[**Important:** If you are copying-pasting (La)TeX code into the HTML editor provided at 0space, and the expression/equation formatting is giving you trouble, select the mathematical expression/equation and clear formatting first.

- In
**WYSIWYG HTML editor**,**Enter**key inserts a**new paragraph**and(*soft*Enter**Shift+Enter**key) inserts a**line-break**. - While editing
**La/TeX code**of mathematical expressions, always use**Shift+Enter**for**newline**(if you need to make the code more readable).