Transpositional sequences and multigraphs

Alissa Ellis Yazinski, Raymond R. Fletcher, Donald Silberger

When $\mathbf{t}:=⟨t_1,t_2,\dots ,t_k⟩$ is a sequence of transpositions on the finite set $n:=\{0,1,\dots ,n-1\}$, then $\bigcirc{\bf t}:= t_1\circ t_2\circ\cdots\circ…