# Category:Named Theorems/Bertrand

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This category contains results named for **Joseph Louis François Bertrand**.

French mathematician working in the fields of number theory, differential geometry, probability theory, economics and thermodynamics.

He conjectured Bertrand's Postulate, in 1845, that there is at least one prime between $n$ and $2n - 2$ for every $n > 3$. This was proved in 1850 by Chebyshev, and hence it is also known as the Bertrand-Chebyshev Theorem.

Also wrote plenty on the history of mathematics.

## Pages in category "Named Theorems/Bertrand"

The following 5 pages are in this category, out of 5 total.