3 papers
math.FA2026
Local Lie Theory in Quasi-Banach Lie Algebras: Convergence of the BCH Series and Geometric Implications
Nassim Athmouni, Mohsen Ben Abdallah, Mondher Damak +3
We develop a local Lie theory for Lie algebras equipped with a quasi-norm, i.e., complete topological vector spaces satisfying a relaxed triangle inequality $\|x+y\|\le \Ctri(\|x\|…
math.RA2025
Homogeneous Rota--Baxter Operators of Weight~0 on
Mohsen Ben Abdallah, Marwa Ennaceur
We give a complete and rigorous classification of homogeneous weight Rota--Baxter operators on the Block-type Witt algebra , assuming the operator has integral degree $(k…
math.RA2025
Classification of Homogeneous Odd Rota--Baxter Operators on a Modified Witt-Type Lie Superalgebra
Mohsen Ben Abdallah, Marwa Ennaceur
We classify all homogeneous odd (i.e., parity-reversing) Rota--Baxter operators of weight zero on the modified Witt-type Lie superalgebra .…