Connectivity may refer to:

Computing and technology

Connectivity (media) Connectivity refers broadly to social connections forged through mediated communications systems. That is, "since the arrival of the World Wide Web and the spread of mobile communications, mediated connectivity has been quietly normalized as cent ...

, the ability of the social media to accumulate economic capital from the users connections and activities *

Internet connectivity Internet access is a facility or service that provides connectivity for a computer, a computer network, or other network device to the Internet, and for individuals or organizations to access or use applications such as email and the World Wide ...

, the means by which individual terminals, computers, mobile devices, and local area networks connect to the global Internet * Pixel connectivity, the way in which pixels in 2-dimensional images relate to their neighbors.

Mathematics

Connectivity (graph theory) In mathematics and computer science, connectivity is one of the basic concepts of graph theory: it asks for the minimum number of elements (nodes or edges) that need to be removed to separate the remaining nodes into two or more Connected compone ...

, a property of a graph. * The property of being a

connected space In topology and related branches of mathematics, a connected space is a topological space that cannot be represented as the union (set theory), union of two or more disjoint set, disjoint Empty set, non-empty open (topology), open subsets. Conne ...

in topology. * Homotopical connectivity, a property related to the dimensions of holes in a topological space, and to its homotopy groups. *

Homological connectivity In algebraic topology, homological connectivity is a property describing a topological space based on its homology groups. Definitions Background ''X'' is ''homologically-connected'' if its 0-th homology group equals Z, i.e. H_0(X)\cong \mat ...

, a property related to the homology groups of a topological space.

Biology

Neurobiology

Homotopic connectivity In biology, homotopic connectivity is the connectivity between mirror areas of the human brain hemispheres. Changes in the homotopic connectivity occur in disorders such as melancholic depression, major depressive disorder, schizophrenia ...

- connectivity between mirror areas of the

human brain The human brain is the central organ (anatomy), organ of the nervous system, and with the spinal cord, comprises the central nervous system. It consists of the cerebrum, the brainstem and the cerebellum. The brain controls most of the activi ...

hemispheres Hemisphere may refer to: In geometry * Hemisphere (geometry), a half of a sphere As half of Earth or any spherical astronomical object * A hemispheres of Earth, hemisphere of Earth ** Northern Hemisphere ** Southern Hemisphere ** Eastern Hemisphe ...

. * Brain connectivity *

Functional connectivity Resting state fMRI (rs-fMRI or R-fMRI), also referred to as task-independent fMRI or task-free fMRI, is a method of functional magnetic resonance imaging (fMRI) that is used in brain mapping to evaluate regional interactions that occur in a rest ...

Dynamic functional connectivity Dynamic functional connectivity (DFC) refers to the observed phenomenon that functional connectivity changes over a short time. Dynamic functional connectivity is a recent expansion on traditional functional connectivity analysis which typically ass ...

Ecology

Landscape connectivity In landscape ecology, landscape connectivity is, broadly, "the degree to which the landscape facilitates or impedes movement among resource patches". Alternatively, connectivity may be a continuous property of the landscape and independent of patche ...

, the degree to which the landscape facilitates or impedes movement among resource patches. *

Permeability (spatial and transport planning) In urban design, permeability and connectivity are terms that describe the extent to which urban forms permit (or restrict) movement of people or vehicles in different directions. The terms are often used interchangeably, although differentiated ...

, the extent to which urban forms permit (or restrict) movement of people or vehicles in different directions.

Physics

* Connectivity, a parameter describing the topology of a