Assertion: contraction | /r/HasProperty | algebraic operation
Facets:
value: purely
type: MANNER
Source sentences:
text: Since contraction is a purely algebraic operation, it can be applied pointwise to a tensor field, e.g. if T is a (1,1) tensor field on Euclidean space, then in any coordinates, its contraction (a scalar field) U at a point x is given by