对于中心为c的星图加细r(s),主要讨论了当导出子图r(s)c^*同构于K1,1时,幂零半群s的代数结构及性质.
For a refinement of a star graph F(S) with center c, a study is conducted on the algebraic structures and algebraic properties of nilpotent semigroup S whose induced graph F(S) c* is isomorphic to KIA.