Reachability

Accessibility is:

• A concept of theoretical computer science in the field of Petri nets
• A term of graph theory, which concerns the question of whether there is a path between two selected nodes, see reachability problem in graphs
• In the sociological theory of social networks the ability of people to act directly or through other on other social actors and to interact with them, behold interaction
• A fundamental concept of phenomenological thermodynamics, which is essential for mathematically precise definition of entropy, see adiabatic accessibility

• Disambiguation