Title
Trisection for supersingular genus $2$ curves in characteristic $2$.
Abstract
By reversing reduction in divisor class arithmetic we provide efficient trisection algorithms for supersingular Jacobians of genus 2 curves over finite fields of characteristic 2. With our technique we obtain new results for these Jacobians: we show how to find their 3-torsion subgroup, we prove there is none with 3-torsion subgroup of rank 3 and we prove that the maximal 3-power order subgroup is isomorphic to either Z/3(nu)Z or (Z/3(nu/2)Z)(2) or (Z/3(nu/4)Z)(4), where nu is the 3-adic valuation nu(3)(#Jac(C)(F(2)m)). Ours are the first trisection formulae available in literature.
Year
DOI
Venue
2014
10.3934/amc.2014.8.375
ADVANCES IN MATHEMATICS OF COMMUNICATIONS
Keywords
Field
DocType
Hyperelliptic curve,supersingular,genus 2,divisor class,trisection,binary field,explicit formulas
Discrete mathematics,Hyperelliptic curve,Finite field,Combinatorics,Binary fields,Isomorphism,Divisor,Mathematics
Journal
Volume
Issue
ISSN
8
SP4
1930-5346
Citations 
PageRank 
References 
2
0.49
3
Authors
3
Name
Order
Citations
PageRank
Josep M. Miret18114.88
Jordi Pujolàs2245.98
Nicolas Thériault317713.06