An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

A generalization of the tensor concept that like a tensor transforms, except for the appearance of an extra factor, which is the → Jacobian matrix of the transformation of the coordinates, raised to some power, in transformation law. The exponent, which is a positive or negative integer, is called the weight of the tensor density. → weight of a tensor density. Ordinary tensors are tensor densities of weight 0. Tensor density is also called → relative tensor.

→ tensor; → density.

A constant the value of which is characteristic for any given → tensor density.

→ weight; → tensor; → density.