# \blacktriangle and \blacktriangledown on beamer slides [closed]

I used for my thesis the `\blacktriangle` and `\blacktriangledown` commands and they work. I used the `book` document class.

Instead now I need to replicate them on a presentation, using the `beamer` document class. However in such a case the symbols do not appear and no related error seems to occur within the log.

EDIT: the symbol goes in conflict with the package `unicode-math`. However, when removing this package my colored bullets in math mode stop working: `\$\textcolor{green}{\textbullet}\$`.

EDIT 2: solved by using `\bullet` instead of `\textbullet`.

• Seems to work fine i.stack.imgur.com/sB5Y0.png Can you please add a short, but compilable test document which allows us to reproduce the problem? Mar 16 at 14:21
• @DanieleCuomo Make a copy of the problematic document, then remove things as long as you can still reproduce the problem. Mar 16 at 14:31
• These two symbols are defined in the package `amssymb`. I'm not sure that this package is always loaded in `beamer`. Mar 16 at 16:18
• @barbarabeeton By default, beamer loads it (unless the OP uses any special options, but we would need to see a mwe) Mar 16 at 16:21
• Mar 17 at 19:22