Hi. I am a mathematician from Brazil. How are you guys?
@jahnke Hello, M R, and welcome to Qoto.
I am doing well, glad you found our instance, it's a friendly and nice place.
Are you familiar with Mastodon yet? I usually recommend a guide for new users, if needed. This one: https://lifehacker.com/a-beginner-s-guide-to-mastodon-1828503235
If you have any questions, please ask. Enjoy your stay! 
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@design_RG hi Rob. I just discovered Mastodon. I'm not familiar with it yet. Thank you for sending me this guide.
@jahnke Ah, wonderful.
Glad I posted the link then.
It's a nice guide, if you have questions just post and ask.