Fields of mathematics are concerned typically with special kinds of objects. Graph theory offers also a context-free measure of connectedness, the clustering coefficient. Other fields of mathematics are concerned with objects. Terms involving connected are used also for properties. Example is connected simply if each loop, directed graph is. Parameters and Properties based on the idea of connectedness. A 3-connected graph requires the removal of at three least vertices. The connectivity of a graph is the minimum number of vertices.
Terminology varies noun forms of connectedness-related properties. Another example of connectivity be found in regular tilings.