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P-vectorA p-vector is the tensor obtained by taking linear combinations of the wedge product of p tangent vectors. It is the dual of a p-form.For p=2 and 3, they are often called bivectors and trivectors. (Alternatively, four-vector is used in relativity to mean a quantity related to the four-dimensional spacetime. In analogy, the term three-vector is sometimes used as a synonym for a spatial vector in three dimensions. These meanings are different from p-vectors for p of 3 or 4.) 
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "P-vector".