👉 In mathematics, a semiregular graph is a graph that has no cycles of odd length. A cycle of odd length means that the graph contains an edge between two vertices with even degrees. In other words, if there are edges between any two vertices in the graph and their degree is odd (i.e., greater than 2), then this cycle must contain at least one additional vertex. Semiregular graphs have applications in various fields such as computer science, physics, and electrical engineering