TY - JOUR AU - de Azcarraga, J. A. AU - Izquierdo, J. M. PY - 2011 DA - 2011// TI - On a class of n-Leibniz deformations of the simple Filippov algebras T2 - J. Math. Phys. JO - Journal of Mathematical Physics SP - 023521 EP - 13pp VL - 52 IS - 2 PB - Amer Inst Physics AB - We study the problem of infinitesimal deformations of all real, simple, finite-dimensional Filippov (or n-Lie) algebras, considered as a class of n-Leibniz algebras characterized by having an n-bracket skewsymmetric in its n-1 first arguments. We prove that all n > 3 simple finite-dimensional Filippov algebras (FAs) are rigid as n-Leibniz algebras of this class. This rigidity also holds for the Leibniz deformations of the semisimple n = 2 Filippov (i.e., Lie) algebras. The n = 3 simple FAs, however, admit a nontrivial one-parameter infinitesimal 3-Leibniz algebra deformation. We also show that the n >= 3 simple Filippov algebras do not admit nontrivial central extensions as n-Leibniz algebras of the above class. SN - 0022-2488 UR - http://arxiv.org/abs/arXiv:1009.2709 UR - https://doi.org/10.1063/1.3553797 DO - 10.1063/1.3553797 LA - English N1 - ISI:000287811800050 ID - deAzcarraga+Izquierdo2011 ER -