Welcome to Steemit! I'm also a mathematician. I think you'll agree we need LaTeX typesetting (Mathjax, or something like Overleaf) ... but things will get there as we get more science community users, I think.
I recommend the
Steemengine / https://steemengine.net/join?r=476
. It gives an alternative to having your posts be more widely seen while you still have little steem power.
It'd be really nice if the site can support LaTeX, it was quite hard to do all of that typesetting without it-- took me a lot of time and it still doesn't look good.