2 problems

Consider a hole whose boundary is a polygon with three sides and whose angles are integer multiples of $36^{\circ}$. The angle-sum condition permits two angle multisets,…

Let $P_0$ be the original pentagon in the Eden model, and let $u_1,u_2,u_3,u_4,u_5$ be the five possible translation vectors between centers of neighboring pentagons. The set of po…