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- Chantal David, Francesco Pappalardiy
- 1998

Let E be an elliptic curve defined over the rationals. For any prime p of good reduction, let Ep be the elliptic curve over Fp obtained by reducing E mod p. Let ap(E) be the trace of the Frobenius… (More)

- Annik Petit, Chantal David, +4 authors Jacques Tempé
- Molecular and General Genetics MGG
- 2004

Primary hairy root tissues as well as aseptic hairy root culture lines contain specific compounds that have been biologically characterized as opines. These substances are agropine, mannopine,… (More)

- M H Brillanceau, Chantal David, Jacques Tempé
- Plant Cell Reports
- 1989

Catharanthus roseus plantlets were inoculated with differentAgrobacterium rhizogenes strains. This plant species is known to produce secondary metabolites and axenic hairy-root cultures are an… (More)

- Chantal David, Jacques Tempé
- Plant Cell Reports
- 1988

Cauliflower plantlets were inoculated with different Agrobacterium rhizogenes strains. Numerous hairy roots were induced on cauliflower hypocotyls by agropine-type strains. Fewer roots were obtained… (More)

Given an integer r, we consider the problem of enumerating the inert prime ideals p of Q(i) for which a given elliptic curve E has trace of Frobenius at p equal to r. We prove that on average the… (More)

We expect this conjecture to be false (for sufficiently large d) when E does have complex multiplication. Nevertheless, our main result is that Conjecture 1.1 at least holds on average. For A,B > 0,… (More)

- Chantal David, Jack Fearnley, Hershy Kisilevsky
- Experimental Mathematics
- 2004

Let E be an elliptic curve over Q with L-function LE(s). We use the random matrix model of Katz and Sarnak to develop a heuristic for the frequency of vanishing of the twisted L-functions LE(1, χ),… (More)

- Alina Bucur, Chantal David, Brooke Feigon, Matilde Lalı́n, Zéev Rudnick
- 2009

Alina Bucur1, Chantal David2, Brooke Feigon3, and Matilde Lalı́n4 1School of Mathematics, Institute for Advanced Study, Princeton, NJ 08540, USA, 2Department of Mathematics, Concordia University,… (More)

Let E/Q be an elliptic curve over the field of rational numbers, with EndQ̄(E) = Z. Let K be a fixed imaginary quadratic field over Q, and x a positive real number. For each prime p of good reduction… (More)

For a finite abelian group G and a finite subset A ⊆ Z, the Davenport constant of G with weight A, denoted by DA(G), is defined to be the smallest positive integer k such that for any sequence (x1, .… (More)