Assignment of a tensor continuously varying across a mathematical space
Not to be confused with the Tensor product of fields.
In mathematics and physics, a tensor field assigns a tensor to each point of a mathematical space (typically a Euclidean space or manifold). Tensor fields are used in differential geometry, algebraic geometry, general relativity, in the analysis of stress and strain in materials, and in numerous applications in the physical sciences. As a tensor is a generalization of a scalar (a pure number representing a value, for example speed) and a vector (a pure number plus a direction, like velocity), a tensor field is a generalization of a scalar field or vector field that assigns, respectively, a scalar or vector to each point of space. If a tensor A is defined on a vector fields set X(M) over a module M, we call A a tensor field on M. [1]
Many mathematical structures called "tensors" are also tensor fields. For example, the Riemann curvature tensor is a tensor field as it associates a tensor to each point of a Riemannian manifold, which is a topological space.
^O'Neill, Barrett. Semi-Riemannian Geometry With Applications to Relativity
and physics, a tensorfield assigns a tensor to each point of a mathematical space (typically a Euclidean space or manifold). Tensorfields are used in differential...
electromagnetism, the electromagnetic tensor or electromagnetic fieldtensor (sometimes called the field strength tensor, Faraday tensor or Maxwell bivector) is a...
In mathematics, tensor calculus, tensor analysis, or Ricci calculus is an extension of vector calculus to tensorfields (tensors that may vary over a manifold...
numbers), and a metric field on M consists of a metric tensor at each point p of M that varies smoothly with p. A metric tensor g is positive-definite...
differential geometry, the Einstein tensor (named after Albert Einstein; also known as the trace-reversed Ricci tensor) is used to express the curvature...
In the mathematical field of differential geometry, the Riemann curvature tensor or Riemann–Christoffel tensor (after Bernhard Riemann and Elwin Bruno...
two vectors is sometimes called an elementary tensor or a decomposable tensor. The elementary tensors span V ⊗ W {\displaystyle V\otimes W} in the sense...
Tensorfields, which associate a tensor to every point in space. For example, in general relativity gravitation is associated with the tensorfield called...
In multilinear algebra, a tensor contraction is an operation on a tensor that arises from the canonical pairing of a vector space and its dual. In components...
In theoretical particle physics, the gluon field strength tensor is a second order tensorfield characterizing the gluon interaction between quarks. The...
covariant derivative of a tensorfield along a vector field v is again a tensorfield of the same type. Explicitly, let T be a tensorfield of type (p, q). Consider...
the tensor product of two fields is their tensor product as algebras over a common subfield. If no subfield is explicitly specified, the two fields must...
Einstein in 1915 in the form of a tensor equation which related the local spacetime curvature (expressed by the Einstein tensor) with the local energy, momentum...
notation and manipulation for tensors and tensorfields on a differentiable manifold, with or without a metric tensor or connection. It is also the modern...
completely antisymmetric contravariant tensorfield may be referred to as a k {\displaystyle k} -vector field. A tensor A that is antisymmetric on indices...
the Einstein tensor, G a b = R a b − 1 2 R g a b {\displaystyle G_{ab}\,=R_{ab}-{\frac {1}{2}}Rg_{ab}} written in terms of the Ricci tensor Rab and Ricci...
of tensor theory. For expositions of tensor theory from different points of view, see: TensorTensor (intrinsic definition) Application of tensor theory...
a Killing tensor or Killing tensorfield is a generalization of a Killing vector, for symmetric tensorfields instead of just vector fields. It is a concept...
geometry, a tensor density or relative tensor is a generalization of the tensorfield concept. A tensor density transforms as a tensorfield when passing...
the change of a tensorfield (including scalar functions, vector fields and one-forms), along the flow defined by another vector field. This change is...
In mathematics, the tensor bundle of a manifold is the direct sum of all tensor products of the tangent bundle and the cotangent bundle of that manifold...
together all the tensors at all points of the manifold, thus 'bundling' them all into one grand object called the tensor bundle. A tensorfield is then defined...