- mangoldt-lambda nprocedure
- n
- integer
The von Mangoldt function. If n=p^k for a prime p and an integer k>=1 then (log n) is returned. Otherwise 0 is returned.
Note: The Von Mangoldt function is not multiplicative.
> (mangoldt-lambda (* 3 3)) 1.0986122886681098 > (log 3) 1.0986122886681098
Wikipedia: Von Mangoldt Function