Person: Bertrand, Joseph Louis François

Bertrand.jpg

Joseph Bertrand was a Paris professor who, in 1845, conjectured:

_I've told you once and I'll tell you again

There's always a prime between n and 2n._

This was proved by Chebyshev in 1850.

Mathematical Profile (Excerpt):

Born 11 March 1822, Paris, France. Died 3 April 1900, Paris, France.

View full biography at MacTutor

Astronomy, Group Theory, Knot Theory, Number Theory, Physics, Puzzles And Problems, Special Numbers And Numerals


Thank you to the contributors under CC BY-SA 4.0!

Github:
bookofproofs
non-Github:
@J-J-O'Connor
@E-F-Robertson


References

Adapted from other CC BY-SA 4.0 Sources:

  1. O’Connor, John J; Robertson, Edmund F: MacTutor History of Mathematics Archive