6533b82bfe1ef96bd128e2ae

RESEARCH PRODUCT

The periods of the generalized Jacobian of a complex elliptic curve

Alfonso Di BartoloGiovanni Falcone

subject

Elliptic curve point multiplicationQuarter periodGeneralized JacobianModular elliptic curveJacobian curveMathematical analysisHessian form of an elliptic curveGeometry and TopologyGeneralized Jacobians toroidal Lie groupsSettore MAT/03 - GeometriaTripling-oriented Doche–Icart–Kohel curveMathematicsJacobi elliptic functions

description

Abstract We show that the toroidal Lie group G = ℂ2/Λ, where Λ is the lattice generated by (1, 0), (0, 1) and (τ̂, τ͂), with τ̂ ∉ ℝ, is isomorphic to the generalized Jacobian JL of the complex elliptic curve C with modulus τ̂, defined by any divisor class L ≡ (M) + (N) of C fulfilling M − N = [℘ (τ͂) : ℘´(τ͂) : 1] ∈ C. This follows from an apparently new relation between the Weierstrass sigma and elliptic functions.

10.1515/advgeom-2014-0029http://hdl.handle.net/10447/104451