Landau's problems

English

Etymology

Listed by Edmund Landau at the International Congress of Mathematicians in 1912.

Proper noun

Landau's problems

1. (mathematics) Four basic unsolved problems about prime numbers: (i) is Goldbach's conjecture true?; (ii) is the twin prime conjecture true?; (iii) is Legendre's conjecture true?; (iv) are there infinitely many primes p such that p − 1 is a perfect square?