Schur Multipliers of Nilpotent Lie Algebras
  We consider the Schur multipliers of finite dimensional nilpotent Lie algebras. If the algebra has dimension greater than one, then the Schur multiplier is non-zero. We give a direct proof of an upper bound for the dimension of the Schur multiplier as a function of class and the minimum number of generators of the algebra. We then compare this bound with another known bound. 
Lindsey R. Bosko and Ernie L. Stitzinger
math.RA