Newton's interpolating polynomial
where 
, 
, etc. which are obtained by constructing a forward difference table.
- subring
- subscript
- subsequence
- subset
- subspace
- subspace topology
- substitution
- substitution group
- subtend
- subtraction
- sufficient condition
- sufficient estimator
- sufficiently large
- sufficient statistic
- sum
- summation notation
- sum to infinity
- sup
- superadditive
- superposition principle
- superscript
- supersink
- supersource
- supplementary angles
- supplementary unit