Circular Permutation
The number of ways to arrange 
distinct objects along a Circle is
The number is
instead of the usual Factorial 
since all Cyclic Permutations of objects are equivalent because the Circle can be rotated.See also Permutation, Prime Circle- Sum
- Summand
- Summatory Function
- Sum-Product Number
- Sum Rule
- Sup
- Characteristic (Partial Differential Equation)
- Characteristic Polynomial
- Characteristic (Real Number)
- Character (Multiplicative)
- Character (Number Theory)
- Character Table
- Charlier's Check
- Chasles-Cayley-Brill Formula
- Chasles's Contact Theorem
- Chasles's Polars Theorem
- Chasles's Theorem
- Chebyshev Approximation Formula
- Chebyshev Constants
- Chebyshev Deviation
- Chebyshev Differential Equation
- Chebyshev Function
- Chebyshev-Gauss Quadrature
- Chebyshev Inequality
- Chebyshev Integral