Hankel Matrix
A Matrix 
where the first row (and column) consists of the integers 1, 2, ..., 
, the second row (andcolumn) is given by 2, 3, ..., , 0, and so on, with the th row (and column) given by , 
. The first few such matrices are
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- Surface Integral
- Surface of Revolution
- Surface of Section
- Surface Parameterization
- Surgery
- Surjection
- Surjective
- Surprise Examination Paradox
- Surreal Number
- Surrogate
- Surveying Problems
- Survivorship Curve
- Suslin's Theorem
- Suspended Knot
- Suspension
- Suzanne Set
- Suzuki Group
- Swallowtail Catastrophe
- Swastika
- Swastika Curve
- Sweep Signal
- Swinnerton-Dyer Conjecture
- Swinnerton-Dyer Polynomial
- Swirl
- Sylow p-Subgroup