# Scripted letters in papers

1. Jun 2, 2017

### Afonso Campos

I was wondering if someone could help me figure out what a scripted letter in a paper I'm reading is called.

The scripted letter is in equation (3). It looks like some kind of a scripted T.

2. Jun 2, 2017

3. Jun 2, 2017

### Staff: Mentor

It is actually an I, representing the imaginary part, obtained using \Im:
$$\Im \omega_0 \leq \pi T_\mathrm{BH}\, .$$

4. Jun 2, 2017

### Staff: Mentor

Arrrgg! MathJax doesn't render that with the right font. Here is how it will look in $\LaTeX$:

5. Jun 2, 2017

### Staff: Mentor

You can test it in the editor section: type something included in $\textrm{$ \mathfrak{something} $}$ and see what it looks like - $\mathfrak{something}$ - by the editor function "preview".

Frequently used fonts are:
\mathbb{} for double lines as in $\mathbb{R}$
\mathcal{} for a look similar to hand writing $\mathcal{G}$
\mathfrak{} fraktura for "old" letters like in $\mathfrak{su}(2)$

Here's an overview of LaTeX symbols: http://detexify.kirelabs.org/symbols.html

6. Jun 3, 2017

### Afonso Campos

Makes sense! Thanks!