Weakly distance-regular digraphs of one type of arcs

Abstract

In this paper, we classify all commutative weakly distance-regular digraphs of girth $g$ and one type of arcs under the assumption that $p_{(1,g-1),(1,g-1)}^{(2,g-2)}\ge k_{1,g-1}-2$. In consequence, we recover [13, Theorem 1.1] as a special case of our result.