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Farshid Saeedi

Publications and source records attributed to Farshid Saeedi.

6 recordsLinked to original sources

On the dimension of c-nilpotent multiplier of n-Lie algebras

Let L be a finite-dimensional n-Lie algebra with free presentation F/R. Then the concept of c-nilpotent multiplier of L, denoted by M(c)(L), is defined as follows: M(c)(L) =(gamma c+1(F) R)/gamma c+1(R, F, . . . , F). In this paper, we obtain some inequalities and certain bounds for the dimension of M(c)(L) by using the basic commutators. Also, we discuss the relationship between the dimension of the c-nilpotent multiplier of L and the c-nilpotent multiplier of some factor of L. We further obtain an inequality between dimensions of c-nilpotent multiplier of n-Lie algebra and non-abelian tensor (exterior) product of a central ideal by its abelianized factor n-Lie algebra. Finally, we also determine the dimension and structure of c-nilpotent multipliers Heisenberg n-Lie algebras, which can be a useful tool for determining the dimension of the multiplier of nilpotent n-Lie algebras of class 2.

math.RA

The 2-nilpotent multiplier of n-Lie algebras and its applications

In this paper, we first recall the concept of c-nilpotent multiplier and c-capability of n-Lie algebras and also, recall the formula for calculating the number of basic commutators in n-Lie algebras. Then we give the structure of 2-nilpotent multiplier of the direct sum of two n-Lie algebras. Next, we calculate the dimension of 2-nilpotent multiplier of every abelian n-Lie algebras and Heisenberg n-Lie algebras H(n,m). Then we give a dimension of 2-nilpotent multiplier of any nilpotent n-Lie algebras of class 2 by using the number of basic commutators.

math.RA

Basic Commutators in n-Lie Algebras

In this paper, we give the structure of free n-Lie algebras. Next, we introduce basic commutators in n-Lie algebras and generalize the Witt formula to calculate the number of the basic commutators. Also, we prove that the set of all of the basic commutators of weight w and length n+(w-2)(n-1) is a basis for Fw, where Fw is the wth term of the lower central series in the free n-Lie algebra F.

math.RA

Frattinian nilpotent Lie algebras

We introduce a novel concept Frattinian nilpotent Lie algebra. Along with some examples, we show that every Frattinian nilpotent Lie algebra has a central decomposition of its ideals.

math.RA

Elements with r-th roots in finite groups

The probability that a randomly chosen element of a finite group is an $r$--th root (for any integer $r\geq2$) has been studied largely in case $r=2$. Certain techniques may be generalized for $r>2$ and here we find the exact value of this probability for projective special linear groups. A result of density is placed at the end, in order to show an analogy with the case $r=2$.

math.GR