Automorphism group of the graph $A(n,k,r)$

Junyao Pan

Let $[n{]}^{(k)}$ be the set of all ordered $k$-tuples of distinct elements in $[n]=\{1,2,...,n\}$. The $(n,k,r)$-arrangement graph $A(n,k,r)$ with $1\le r\le k\le n$, is the grap…