Ruadhaí Dervan is a mathematician at the University of Warwick, where he holds the position of Reader.
This article describes how you can describe the entire universe of Riemann tori (surfaces that look like dooughnuts) in one go.
A Riemann torus is a surface that looks like a doughnut. This articles explored how you might tell Riemann tori apart.
How many different surfaces are there? The question seems impossible to answer, but mathematicians have a way of dealing with the multitude. Follow us on a journey into the world of moduli spaces.
