Möbius function

(redirected from Moebius function)

Möbius function

[′mər·bē·əs ‚fəŋk·shən]
(mathematics)
The function μ of the positive integers where μ(1) = 1, μ(n) = (-1) r if n factors into r distinct primes, and μ(n) = 0 otherwise; also, μ(n) is the sum of the primitive n th roots of unity.
References in periodicals archive ?
where [mu]: L x L [right arrow] Z is the Moebius function, defined recursively by the relations:
But a simple property of the Moebius function is that [(-1)[sup.
But we need first an interpretation of the Moebius function in the case of subspace arrangements.