Main Page | See live article | Alphabetical index In mathematics, the cyclotomic identity states that where M is Moreau's necklace-counting function and μ is the classic Möbius function of number theory. The denominator on the right, 1 − z j, is a cyclotomic polynomial -- hence the name. Reference Nicholas Metropolis & Gian-Carlo Rota. The Cyclotomic Identity. Reprinted in Gian-Carlo Rota on Combinatorics. Birkhäuser. Boston. 1995. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.