Clique Number
The number of Vertices in the largest Clique of 
, denoted 
. For an arbitraryGraph,
where
is the Degree of Vertex 
.References
Aigner, M. ``Turán's Graph Theorem.'' Amer. Math. Monthly 102, 808-816, 1995.
- Oscillation
- Oscillation Land
- Osculating Circle
- Osculating Curves
- Osculating Interpolation
- Osculating Plane
- Osculating Sphere
- Osedelec Theorem
- Ostrowski's Inequality
- Ostrowski's Theorem
- Otter's Tree Enumeration Constants
- Outdegree
- Outer Automorphism Group
- Outer Product
- Oval
- Oval of Descartes
- Ovals of Cassini
- Overlapping Resonance Method
- Oversampling
- Ovoid
- Paasche's Index
- Packing
- Packing Density
- p-adic Number
- Padovan Sequence