#### Vol. 7, No. 5, 2013

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On binary cyclotomic polynomials

### Étienne Fouvry

Vol. 7 (2013), No. 5, 1207–1223
##### Abstract

We study the number of nonzero coefficients of cyclotomic polynomials ${\Phi }_{m}$, where $m$ is the product of two distinct primes.

##### Keywords
cyclotomic polynomials, exponential sums, sieves
##### Mathematical Subject Classification 2010
Primary: 11N13
Secondary: 11L20, 11C08, 11N36, 11L07, 11N05