Boundary
Boundary or Boundaries may refer to: Border, in political geography == Entertainment == Boundaries (2016 film), a Canadian film Boundaries (2018 film), an American-Canadian road trip film Boundaries (band), an American metalcore band Boundary (cricket), the edge of the playing field, or a scoring shot where the ball is hit to or beyond that point Boundary (sports), the sidelines of a field Boundary (video game), a defunct 2023 multiplayer online game set in outer space == Mathematics and physics == 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 of a manifold with boundary.