Quadtree
A Tree having four branches at each node. Quadtrees are used in the construction of some multidimensional databases(e.g., cartography, computer graphics, and image processing). For a 
-D tree, the expected number of comparisons over allpairs of integers for successful and unsuccessful searches are given analytically for 
and numerically for 
byFinch.
References
Finch, S. ``Favorite Mathematical Constants.'' http://www.mathsoft.com/asolve/constant/qdt/qdt.html Flajolet, P.; Gonnet, G.; Puech, C.; and Robson, J. M. ``Analytic Variations on Quadtrees.'' Algorithmica 10, 473-500, 1993. Lauwerier, H. Fractals: Endlessly Repeated Geometric Figures. Princeton, NJ: Princeton University Press, pp. 11-13, 1991.
- Greatest Prime Factor
- Great Hexacronic Icositetrahedron
- Great Hexagonal Hexecontahedron
- Great Icosacronic Hexecontahedron
- Great Icosahedron
- Great Icosahedron-Great Stellated Dodecahedron Compound
- Great Icosicosidodecahedron
- Great Icosidodecahedron
- Great Icosihemidodecacron
- Great Icosihemidodecahedron
- Great Inverted Pentagonal Hexecontahedron
- Great Inverted Retrosnub Icosidodecahedron
- Great Inverted Snub Icosidodecahedron
- Great Pentagonal Hexecontahedron
- Great Pentagrammic Hexecontahedron
- Great Pentakis Dodecahedron
- Great Quasitruncated Icosidodecahedron
- Great Retrosnub Icosidodecahedron
- Great Rhombicosidodecahedron (Archimedean)
- Great Rhombicosidodecahedron (Uniform)
- Great Rhombic Triacontahedron
- Great Rhombicuboctahedron (Archimedean)
- Great Rhombicuboctahedron (Uniform)
- Great Rhombidodecacron
- Great Rhombidodecahedron