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Plücker Coordinates


The Plücker coordinates of a k-dimensional subspace W of an n-dimensional vector space are the k×k minors p_I of a matrix whose rows span W. They are homogeneous coordinates, so multiplying all p_I by the same nonzero scalar gives the same point of projective space.

These coordinates define the Plücker embedding of the Grassmannian. Their image is characterized by the quadratic Plücker relations. Plücker coordinates are also called Grassmann coordinates.


See also

Grassmann Coordinates, Grassmannian, Homogeneous Coordinates, Plücker Embedding, Plücker Relations

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References

Harris, J. "Grassmannians and Related Varieties." Lecture 6 in Algebraic Geometry: A First Course. New York: Springer-Verlag, pp. 63-71, 1992.

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Plücker Coordinates

Cite this as:

Weisstein, Eric W. "Plücker Coordinates." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/PlueckerCoordinates.html

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