 Density (disambiguation)

Density and dense usually refer to a measure of how much of some entity is within a fixed amount of space. Types of density include:
In physics, density of mass:
 Density, mass per volume
 Area density or surface density, mass over a (twodimensional) area
 Linear density, mass over a (onedimensional) line
 Bulk density, mass of many particles of a particulate solid or a powder divided by the total volume they occupy
 Particle density or true density, density of the particles that make up a particulate solid or a powder
 Relative density or specific gravity, a measure of density in comparison to the density of something else
 Vapour density, a relative density used for gases
 Planck density, Planck mass per Planck length
In physics, densities of entities other than mass:
 Number density, number of particles per unit volume, area, or length
 Current density, the ratio of electric current to area
 Charge density, the electric charge per volume
 Energy density, potential energy per unit volume or mass, depending on context
 Force density, force per unit volume
 Optical density, the absorbance of an element
In mathematics:
 Dense set and nowhere dense set in topology
 Density of a topological space
 Schnirelmann density in number theory
 Natural density (also called asymptotic density) in number theory
 Lebesgue's density theorem in measure theory
 Probability density function, a function which maps probabilities across the real line and whose integral is 1
 Density estimation is the construction of an estimate of a probability density function
 Kernel density estimation, used in statistics to estimate a probability density function of a random variable
 Tensor density in differential geometry
 Density in graph theory, the fraction of possible edges that exist in a graph
 Denseinitself, in geometry, is a set that contains no isolated points
 Dense order in order theory
 Dense can used to refer to a coinitial subset in the theory of forcing.
 Density of a polytope in geometry
 Density on a manifold
 Dense submodule in abstract algebra
In other scientific fields:
 Population density, population per unit area
 Memory storage density, bits (how computers store information) over an amount of area or volume
Density can also refer to:
 Plane (esotericism) (spiritual density), states of being for various planes of existence
 Stupidity, a stupid person is sometimes referred to as being "dense"
See also
This disambiguation page lists articles associated with the same title.
If an internal link led you here, you may wish to change the link to point directly to the intended article.Categories: Disambiguation pages
 Mathematical disambiguation
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