The Year in Mathematics | Quanta Magazine

Mathematics is, at its core, an art. Like painters, musicians or writers, mathematicians create and explore new worlds. They test, and then push past, the limits of their imagination. They engage with thousands of years of history, with concepts and tastes and fashions that are constantly in flux.
This artistic pursuit of beauty, truth and meaning is what every Quanta math story is about, to some extent. This was on full display in one of my favorite articles of the year, an account by Kevin Hartnett of how a mathematician named Hannah Cairo solved an important problem in the field of harmonic analysis — at just 17 years old.
Cairo grew up in the Bahamas, where she was homeschooled, learning math by watching Khan Academy videos and consuming everything else she could find online. She found the homeschooling experience overwhelmingly lonely and confining. “There was this inescapable sameness,” she told Hartnett. “No matter what I did, I was in the same place doing mostly the same things. I was very isolated, and nothing I could do could really change that.”
Except studying math. Math gave her the escape she needed, an entire universe to roam — in Cairo’s words, a “world of ideas that I can explore on my own.” It’s impossible not to see math as art here: a way of experimenting with new ideas, of grappling with a world that doesn’t always make sense.
And, crucially, of questioning assumptions. As a teenager, Cairo moved to California, where she took graduate-level classes at the University of California, Berkeley and encountered a 40-year-old conjecture about the behavior of functions. After several months of persistent work, she constructed a counterexample to the conjecture that more seasoned mathematicians had missed. Just as art is so frequently inextricable from the artist who makes it, Cairo was uniquely positioned to formulate a fresh perspective on the functions she was studying, which allowed her to show that they can behave in more counterintuitive ways than mathematicians had imagined.
That’s often what success in math is all about.




