👉 Sinisterness is a concept in the field of mathematics and computer science, particularly in the area of graph theory. It refers to certain subsets of graphs that are not connected but have an interesting property. In other words, it's like saying that if you have a set of points on a graph (like vertices), and you want to find out whether they form a closed loop or not, then you can use the concept of "sinisterness" to help you determine if there are any loops
