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Nombres de racines d’un polynôme entier modulo q

Monique Branton, Olivier Ramaré (1998)

Journal de théorie des nombres de Bordeaux

Nous montrons que l’ensemble des racines modulo une puissance d’un nombre premier d’un polynôme à coefficients entiers de degré d est une union d’au plus d progressions arithmétiques de modules assez grands. Nous en déduisons une majoration du nombre de ses racines dans un intervalle réel court.

On arithmetic progressions on Edwards curves

Enrique González-Jiménez (2015)

Acta Arithmetica

Let m > 0 and a,q ∈ ℚ. Denote by m ( a , q ) the set of rational numbers d such that a, a + q, ..., a + (m-1)q form an arithmetic progression in the Edwards curve E d : x ² + y ² = 1 + d x ² y ² . We study the set m ( a , q ) and we parametrize it by the rational points of an algebraic curve.

On families of weakly dependent random variables

Tomasz Łuczak (2011)

Banach Center Publications

Let ( k ) be a family of random independent k-element subsets of [n] = 1,2,...,n and let ( ( k ) , ) = ( k ) ( ) denote a family of ℓ-element subsets of [n] such that the event that S belongs to ( k ) ( ) depends only on the edges of ( k ) contained in S. Then, the edges of ( k ) ( ) are ’weakly dependent’, say, the events that two given subsets S and T are in ( k ) ( ) are independent for vast majority of pairs S and T. In the paper we present some results on the structure of weakly dependent families of subsets obtained in this way. We also list...

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