Boundary or boundaries may refer to:

Notably plural usagesEdit

(under construction)

In specific fields of studyEdit

PsychologyEdit

SociologyEdit

Mathematics and physicsEdit

  • Boundary (topology), the closure minus the interior of a subset of a topological space; an edge in the topology of manifolds, as in the case of a 'manifold with boundary'
  • Boundary value problem, a differential equation together with a set of additional restraints called the boundary conditions
  • Boundary (thermodynamic), the edge of a thermodynamic system across which heat, mass, or work can flow

Place namesEdit

See alsoEdit