There are two fundamental identities for n-ary generalizations of the Jacobi identity. One fundamental identity is right for Nambu mechanics and such, the other for $L_{\infty}$ algebras as in CSFT. Which is physically relevant for double field theory? For fluxes?
This post imported from StackExchange MathOverflow at 2014-08-06 11:51 (UCT), posted by SE-user Jim Stasheff