English

Zero product and zero Jordan product determined Munn algebras

Rings and Algebras 2024-07-02 v1

Abstract

Let M(D,m,n,P)\mathfrak{M}(\mathbb{D}, m, n, P) be the ring of all m×nm \times n matrices over a division ring D\mathbb{D}, with the product given by AB=APBA \bullet B=A P B, where PP is a fixed n×mn \times m matrix over D\mathbb{D}. When 2m,n<2\leq m, n <\infty and rankP2\operatorname{rank} P \geq 2, we demonstrate that every element in A=M(D,m,n,P)\mathcal{A}=\mathfrak{M}(\mathbb{D}, m, n, P) is a sum of finite products of pairs of commutators. We also estimate the minimal number NN such that A=N[A,A][A,A]\mathcal{A}= \sum^N [\mathcal{A}, \mathcal{A}][\mathcal{A}, \mathcal{A}]. Furthermore, if charD2\operatorname{char}\mathbb{D}\neq 2, we prove that M(D,m,n,P)\mathfrak{M}(\mathbb{D}, m, n, P) is additively spanned by Jordan products of idempotents. For a field F\mathbb{F} with charF2,3\operatorname{char}\mathbb{F}\neq 2, 3, we show that the Munn algebra M(F,m,n,P)\mathfrak{M}(\mathbb{F}, m, n, P) is zero product determined and zero Jordan product determined.

Keywords

Cite

@article{arxiv.2407.00892,
  title  = {Zero product and zero Jordan product determined Munn algebras},
  author = {Bo Yu and Kaijia Luo and Jiankui Li},
  journal= {arXiv preprint arXiv:2407.00892},
  year   = {2024}
}