Yael Fregier

activity

20032026

most citedOn unitality conditions for Hom-associative algebras

32 citations · 116 across the 14 of their papers we have counts for

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4 papers · 1 filter

math.RT2019

Cohomologies of a Lie algebra with a derivation and applications

Rong Tang, Yael Fregier, Yunhe Sheng

The main object of study of this paper is the notion of a LieDer pair, i.e. a Lie algebra with a derivation. We introduce the concept of a representation of a LieDer pair and study…

math.RT2015

Lower Central Series Ideal Quotients Over F_p and Z

Yael Fregier, Isaac Xia

Given a graded associative algebra $A$ , its lower central series is defined by $L_{1} = A$ and $L_{i + 1} = [L_{i}, A]$ . We consider successive quotients $N_{i} (A) = M_{i} (A) / M_{i + 1} (A)$ ,…

math.RT2013

Non abelian cohomology of extensions of Lie algebras as Deligne groupoid

Yael Fregier

In this note we show that the theory of non abelian extensions of a Lie algebra $g$ by a Lie algebra $h$ can be understood in terms of a differential graded L…

math.RT2004

Deformation of the Heisenberg Algebra inside $g l (3, K)$

Yael Fregier

We study non-trivial deformations of the natural imbedding of the Lie algebra $\fh_1$ of lower triangular matrices (the Heisenberg Lie algebra) into $g l (3, K)$ , where $\mat…

Cohomologies of a Lie algebra with a derivation and applications

Lower Central Series Ideal Quotients Over F_p and Z

Non abelian cohomology of extensions of Lie algebras as Deligne groupoid

Deformation of the Heisenberg Algebra inside gl(3,K)

Deformation of the Heisenberg Algebra inside $g l (3, K)$