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- Submatrix
- Subnormal
- Subordinate Norm
- Subscript
- Subsequence
- Subset
- Subspace
- Substitution Group
- Substitution Map
- Subtend
- Subtraction
- Succeeds
- Successes
- Sufficient
- Suitable Number
- Sum
- Summand
- Summatory Function
- Sum-Product Number
- Sum Rule
- Sup
- Characteristic (Partial Differential Equation)
- Characteristic Polynomial
- Characteristic (Real Number)
- Character (Multiplicative)