Science Quotes by Nathan Fine (1 quote)
Chebyshev said, and I say it again. There is always a prime between n and 2n.
— Nathan Fine
[Referring to the theorem known as the Bertrand postulate, partially solved by Joseph Bertrand (1822-1900). Chebyshev produced a complete, but difficult, proof. Paul Erdös gave an elegant new proof at age 18, while a second-year undergraduate.] Rhyme quoted by Béla Bollobás, 'The Life and Work of Paul Erdos", in Shiing-Shen Chern and Friedrich Hirzebruch (eds.) Wolf Prize in Mathematics (2000), Vol. 1, 296.