Liouville function
The Liouville function, named after Joseph Liouville, is a multiplicative number-theoretic function. It is designated by the Greek letter, and is defined as follows:
It denotes the order of, meaning the number of (not necessarily distinct) prime factors.
It also defines and.
The first values are (starting at )
Properties
It is
The Liouville function is related to the Möbius function by
String
The Dirichlet series of the Liouville function can be expressed by the Riemann zeta function:
Your Lambert series is given by
Where the Jacobi theta function called.
Buzz
It should be
The Pólya conjecture states that it is - how can the graphics suspect right - always
This assumption has now been refuted; the smallest counterexample is. It is, however, so far not known whether its sign infinitely often changes.
A related sum is
For this it was assumed she was always positive for sufficiently large; This was disproved in 1958 by the English mathematician Colin Brian Haselgrove, where he showed that infinitely often assumes negative values . A proof of the conjecture would have the accuracy of Riemann conjecture result.