Grassmann Manifold
A special case of a Flag Manifold. A Grassmann manifold is a certain collection of vector Subspaces of a Vector Space. In particular, 
is the Grassmann manifold of 
-dimensional subspaces of theVector Space 
. It has a natural Manifold structure as an orbit-space of the Stiefel Manifold
of orthonormal -frames in . One of the main things about Grassmann manifolds is that they areclassifying spaces for Vector Bundles.
- Panmagic Square
- Pantograph
- Papal Cross
- Pappus Chain
- Pappus-Guldinus Theorem
- Pappus's Centroid Theorem
- Pappus's Harmonic Theorem
- Pappus's Hexagon Theorem
- Pappus's Theorem
- Parabiaugmented Dodecahedron
- Parabiaugmented Hexagonal Prism
- Parabiaugmented Truncated Dodecahedron
- Parabidiminished Rhombicosidodecahedron
- Parabigyrate Rhombicosidodecahedron
- Parabola
- Parabola Caustic
- Parabola Evolute
- Parabola Inverse Curve
- Parabola Involute
- Parabola Pedal Curve
- Parabolic Coordinates
- Parabolic Cyclide
- Parabolic Cylinder
- Parabolic Cylinder Function
- Parabolic Cylindrical Coordinates