The mathematical research-data repository MathRepo

MathRepo, located at https://mathrepo.mis.mpg.de, is an online repository for mathematical research data. In mathematics, research data comes in many different flavours. For instance, in computer algebra it most often takes the form of mathematical documents, notebooks, research-software packages and libraries, computer algebra systems, algorithms, and collections of mathematical objects. In this work we give an overview of the type of contributions hosted by MathRepo, we discuss the principles that should be followed to make a research-data repository good, and the current challenges we are facing as MathRepo's maintainers.