In projective geometry, duality or plane duality is a formalization of the striking symmetry of the roles played by points and lines in the definitions...

respect to projective transformations, as is seen in perspective drawing from a changing perspective. One source for projective geometry was indeed the...

of mathematical duality Duality (optimization) Duality (order theory), a concept regarding binary relations Duality (projective geometry), general principle...

the complex projective plane, and finite, such as the Fano plane. A projective plane is a 2-dimensional projective space. Not all projective planes can...

In algebraic geometry, a projective variety is an algebraic variety that is a closed subvariety of a projective space. That is, it is the zero-locus in...

projective geometry Duality (projective geometry) Real projective plane Real projective space Segre embedding of a product of projective spaces Rational normal...

In algebraic geometry, a branch of mathematics, Serre duality is a duality for the coherent sheaf cohomology of algebraic varieties, proved by Jean-Pierre...

Duality principle or principle of duality may refer to: Duality (projective geometry) Duality (order theory) Duality principle (Boolean algebra) Duality...

suggests the principle of duality for projective plane geometries, meaning that any true statement valid in all these geometries remains true if we exchange...

that the dual of A is A itself. For example, Desargues' theorem is self-dual in this sense under the standard duality in projective geometry. In mathematical...