access relations

Access relations are tools used in mathematics and computer science to describe how different sets or groups are connected through common elements or relationships. Think of them as a way to map or specify how one thing relates or interacts with another—for example, identifying which users have access to specific files or resources. They establish a formal link, showing who or what can reach or interact with which parts of a system, helping to organize, understand, and manage permissions, privileges, or relationships systematically.