inner product
Noun
Meaning
a real number (a scalar) that is the product of two vectors
Source: WordNetSynonyms
Hypernyms
Examples
For the p -norm becomes the Euclidean norm: :: :which is Pythagoras' theorem in n -dimensions, a very special case corresponding to an inner product norm.
Any complete inner product space V has an orthonormal basis.
Curl geometrically 2-vectors correspond to the exterior power ; in the presence of an inner product, in coordinates these are the skew-symmetric matrices, which are geometrically considered as the special orthogonal Lie algebra of infinitesimal rotations.
Direct sum of modules with additional structure If the modules we are considering carry some additional structure (e.g. a norm or an inner product ), then the direct sum of the modules can often be made to carry this additional structure, as well.
Every inner product V space is a dense subspace of some Hilbert space.
For example, a bilinear form is the same thing as a (0, 2) -tensor; an inner product is an example of a (0, 2) -tensor, but not all (0, 2) -tensors are inner products.