Curvature Scalar
The curvature scalar is given by
where
is the Metric Tensor and 
is the Ricci Tensor.See also Curvature, Gaussian Curvature, Mean Curvature, Metric Tensor, Radius of Curvature,Ricci Tensor, Riemann-Christoffel Tensor- Class (Group)
- Classical Groups
- Classification
- Classification Theorem
- Class Interval
- Class (Map)
- Class (Multiply Perfect Number)
- Class Number
- Class Number Formula
- Class Representative
- Class (Set)
- Clausen Formula
- Clausen Function
- Clausen's Integral
- CLEAN Algorithm
- CLEAN Beam
- CLEAN Map
- Clebsch-Aronhold Notation
- Clebsch Diagonal Cubic
- Clebsch-Gordan Coefficient
- Clement Matrix
- Clenshaw Recurrence Formula
- Clifford Algebra
- Clifford's Circle Theorem
- Clifford's Curve Theorem