Class preserving automorphisms of unitriangular groups

Valeriy Bardakov, Andrei Vesnin, Manoj K. Yadav

Let ${\text{UT}}_n(K)$ be a unitriangular group over a field $K$ and ${\Gamma }_{n,k}:={\text{UT}}_n(K)/{\gamma }_k({\text{UT}}_n(K))$, where ${\gamma }_k({\mathrm{UT}}_n(K))$ denotes the $k$-th term…