Boundary

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Boundary (plural: boundaries) may refer to any meaning below, also to border.

Psychology[edit]

Sociology[edit]

Mathematics and physics[edit]

  • 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

Other[edit]

Place names[edit]

Ships[edit]