Linked from
The 11 pages that link to Boundary (topology), each with the reason it gives.
Closed setRelated: A set is closed exactly when it contains its boundary.
Maximum principleRelated: The theorem locates allowed extrema on this edge of the domain.
Feasible regionRelated: Constraint boundaries mark where an inequality becomes an equality.
Stokes' theoremRelated: The curve in the theorem is precisely the boundary of the chosen surface.
Dirichlet problemRelated: Prescribed Dirichlet data are assigned on the domain’s boundary.
Convex bodyRelated: The boundary separates a convex body from the space outside it.
Möbius stripRelated: The strip has one connected boundary curve despite having only one side.
3-manifoldRelated: Manifolds with boundary use half-space neighborhoods at boundary points.