Boundary or Boundaries may refer to: *

Border Borders are usually defined as geographical boundaries, imposed either by features such as oceans and terrain, or by political entities such as governments, sovereign states, federated states, and other subnational entities. Political borders c ...

, in political geography

Entertainment

* ''Boundaries'' (2016 film), a 2016 Canadian film * ''Boundaries'' (2018 film), a 2018 American-Canadian road trip film *

Boundary (cricket) In cricket, the boundary is the perimeter of a playing field. It is also the term given to a scoring shot where the ball is hit to, or beyond, that perimeter, which generally earns four or six runs for the batting team. Edge of the field The b ...

, 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

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 (graph theory) In graph theory, the outer boundary of a Glossary of graph theory#subgraph, subgraph of a graph (discrete mathematics), graph is the set of vertex (graph theory), vertices of not in that have a common edge (graph theory), edge with a vertex i ...

, the vertices of edges between a subgraph and the rest of a graph *

Boundary (chain complex) In algebraic topology, a -chain is a formal linear combination of the -cells in a cell complex. In simplicial complexes (respectively, cubical complexes), -chains are combinations of -simplices (respectively, -cubes), but not necessarily connecte ...

, its abstractization in chain complexes *

Boundary value problem In mathematics, in the field of differential equations, a boundary value problem is a differential equation together with a set of additional constraints, called the boundary conditions. A solution to a boundary value problem is a solution to t ...

, a differential equation together with a set of additional restraints called the boundary conditions * Boundary (thermodynamics), the edge of a thermodynamic system across which heat, mass, or work can flow

Psychology and sociology

* Personal boundaries, a life skill for protecting against having personal values compromised or violated *

Boundaries of the mind Boundaries of the mind refers to a personality trait concerning the degree of separateness ("thickness") or connection ("thinness") between mental functions and processes. Thin boundaries are associated with open-mindedness, sensitivity, vulnerab ...

, the degree of separateness between fantasy and reality *

Professional boundaries Professional boundaries are an important consideration in the relationship between any professional and their client. Nurse-client boundaries Boundaries are an integral part of the nurse-client relationship. They represent invisible structures i ...

, relationship between any professional and their client *

Symbolic boundaries Symbolic boundaries are a theory of how people form social groups proposed by cultural sociologists. Symbolic boundaries are “conceptual distinctions made by social actors…that separate people into groups and generate feelings of similarity a ...

, a theory of how people form social groups proposed by cultural sociologists * Boundary-work, sociology of divisions between fields of knowledge

Places

* Boundary, Derbyshire, a civil parish and hamlet in South Derbyshire, England * Boundary, Leicestershire, a village in Leicestershire, England *

Boundary, Staffordshire Boundary is a village in the civil parish of Forsbrook, in the Staffordshire Moorlands district, in the county of Staffordshire, England, near to the town of Cheadle. It is just outside of the city of Stoke-on-Trent Stoke-on-Trent (often abb ...

, a village in Staffordshire, England *

Boundary Ranges The Boundary Ranges, also known in the singular and as the Alaska Boundary Range, are the largest and most northerly subrange of the Coast Mountains. They begin at the Nass River, near the southern end of the Alaska Panhandle in the Canadian p ...

, also known as the Boundary Range, a mountain range in British Columbia, Canada and Alaska, United States *

Boundary County, ID Boundary County is the northernmost county of the U.S. state of Idaho. As of the 2020 census, the population was 12,056. The county seat and largest city is Bonners Ferry. Boundary County was created by the Idaho Legislature on January 23, 1 ...

, the northernmost county in Idaho *

Boundary Country The Boundary Country is a historical designation for a district in southern British Columbia lying, as its name suggests, along the boundary between Canada and the United States. It lies to the east of the southern Okanagan Valley and to the west o ...

, a region of southern British Columbia, Canada **

Kootenay Boundary Regional District The Regional District of Kootenay Boundary (RDKB) is one of 28 List of regional districts of British Columbia, regional districts in the province of British Columbia, Canada. As of the 2016 Canadian census, the population was 31,447. The area is ...

, a regional district in British Columbia ** West Kootenay-Boundary, a provincial electoral district in British Columbia ** Okanagan-Boundary, a former provincial electoral district in British Columbia ** Boundary-Similkameen, a former provincial electoral district in British Columbia * Boundary Falls, British Columbia, also known as Boundary, a former railway town in the Boundary Country of British Columbia * Boundary Waters, a region on the boundary between Ontario and Minnesota * Stikine, British Columbia, called Boundary from 1930 to 1964, a former customs post on the Stikine River at the Alaska–British Columbia border * Boundary City, Indiana, a community in the United States

Other uses

*, a number of ships with this name * Boundaries in landscape history, the divide between areas of differing land used * Boundary (real estate), the legal boundary between units of real property * Boundary (company), an American application performance management company *

Boundary critique Boundary critique (BC) is the concept in critical systems thinking that, according to Ulrich (2002), states that "both the meaning and the validity of professional proposition In logic and linguistics, a proposition is the meaning of a declarati ...

, a concept about the meaning and validity of propositions * Boundary turbulence, a break in expectation of how private information is held within a group of knowledge owners *Boundary Ale, a beer made by Moosehead Breweries *Geological boundary, a boundary between different geological units *Boundary, software for secure remote access to systems based on trusted identity developed by

HashiCorp HashiCorp is a software company with a freemium business model based in San Francisco, California. HashiCorp provides open-source tools and commercial products that enable developers, operators and security professionals to provision, secure, run ...

Entertainment

Mathematics and physics

Psychology and sociology

Places

Other uses

See also