Glaisher's theorem

Glaisher's theorem is a result in number theory, specifically related to the distribution of prime numbers. It gives a bound on the error term in the prime number theorem. The prime number theorem states that the number of primes less than a given number \( x \) is asymptotically equivalent to \( \frac{x}{\log x} \). Glaisher's theorem refines the understanding of the error in this approximation.