These category is mathematicist Wikipedians.

The main then other mathematicist-related/-focused userboxes.

Code	Result
{{User:Dchmelik/Userboxes/mathematicism}}	This user is mathematicist. ${\displaystyle e^{ix}=\cos x+i\sin x}$	Usage
{{Template:User Pythagoreanism}}	This user is (neo-)Pythagorean.	Usage
{{Template:User plato}}	This user likes Plato	Usage
{{Template:User Platonist Wikipedians}}	This user is a Platonist.	Usage
{{Template:User Platonism}}	This user is a (neo-)Platonist.	Usage
{{Template:User Neopythagoreanism}}	This user is Neopythagorean.	Usage
{{Template:User Neoplatonism}}	This user is Neoplatonist.	Usage
{{User:LightSpectra/Userboxes/RD}}	This user likes René Descartes.	Usage
{{Template:User Leibnizianism}}	This user is Leibnizian.	Usage
{{User:Swpb/Userboxes/MUH}}	${\displaystyle \Diamond x\!\!\rightarrow \!\!\Box x}$ This user lives in a mathematical universe.	Usage

To add yourself to this category without userbox, write (where YOUR NAME is the (user)name you list yourself under) [[Category:Mathematicist Wikipedians|YOUR NAME]] in your user page.

Avoid self-reference, so this is part of the Wikipedia project, not encyclopedic content.