A bivector, also called a 2-vector, is an antisymmetric tensor of second rank (a.k.a. 2-form).
For a bivector 
,
 |
where 
is the wedge
product (or outer product).
Bivector
See also
Differential k-Form, Tensor, VectorExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Bivector." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Bivector.html