Wikimedia
Nikolai Lobachevsky, known for his work on hyperbolic geometry.
It is beautiful in its own right and a way by which we can understand the world.
That being said, those who bravely pursue fields that heavily use mathematics may sometimes feel like they want to rip their hair out.
To help ease the pain, Business Insider put together a list of small gifts and gadgets that math lovers might appreciate.
So if you know someone who has a probability final coming up, or spends nearly a hundred hours a week working on excel sheets, here are some things you can get them this holiday season.