Why Is Category Theory a Trending Topic?
Recently, various scientific media have been paying attention to a branch of mathematics called “category theory” that has become pretty popular inside the mathematical community in recent years. Some mathematicians are even starting to complain on Twitter that more people are tweeting about category theory than their own specialties. But what is this branch of mathematics, and why is it becoming so fashionable?
Source: Why Is Category Theory a Trending Topic?, an article by John Baez.