BRAINERD, Minn. -- Consider this math problem: Find the square root of 49, double it, minus 5, square it, subtract 1, divide by 4, cut in half, cut in half, subtract 1, divide by 2, cut in half, cut ...
Hannah Cairo shook the math world when she disproved the Mizohata-Takeuchi conjecture, a 40-year-old unsolved math problem, when she was only 17. Well ahead of her peers in math, Cairo applied to ...