Superalgebras associated to Riemann surfaces: Jordan algebras of   Krichever-Novikov type
  We construct two superalgebras associated to a punctured Riemann surface. One of them is a Lie superalgebra of Krichever-Novikov type, the other one is a Jordan superalgebra. The constructed algebras are related in several ways (algebraic, geometric, representation theoretic). In particular, the Lie superalgebra is the algebra of derivations of the Jordan superalgebra. 
S\'everine Leidwanger and Sophie Morier-Genoud
math.RA