A tensor is a mathematical object. Tensors provide a mathematical framework for solving physics problems in areas such as elasticity, fluid mechanics and general relativity. The word tensor comes from the Latin word tendere meaning "to stretch".
A tensor of order zero (zeroth-order tensor) is a scalar (simple number). A tensor of order one (first-order tensor) is a linear map that maps every vector into a scalar. A vector is a tensor of order one. A tensor of order two (second-order tensor) is a linear map that maps every vector into a vector (e.g. a matrix).
Related pages[change | change source]
- Einstein field equations, where tensor is used
References[change | change source]
- Rowland, Todd; Weisstein, Eric W. "Tensor". Wolfram Research. Retrieved 2016-02-19.
- Danielson, D. A. (1997). Vectors and Tensors in Engineering and Physics (Second ed.). Reading, Massachusetts: Addison-Wesley. p. 17. ISBN 0-201-44210-8.
- "Comprehensive List of Algebra Symbols". Math Vault. 2020-03-25. Retrieved 2020-09-07.
- Weisstein, Eric W. "Vector Space Tensor Product". mathworld.wolfram.com. Retrieved 2020-09-07.