Topics in mathematics
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- Sampling frameConcept in statistics
- Sanjeev Arora (computer scientist)Theoretical computer scientist
- Santali languageMunda language of South Asia
- Sard's theoremIn mathematics, Sard's theorem, also known as Sard's lemma or the Morse–Sard theorem, is a
- Scale-free networkNetwork whose degree distribution follows a power law
- Scheme (mathematics)Generalization of algebraic variety
- Schrödinger groupThe Schrödinger group is the symmetry group of the free particle Schrödinger equation. Mat
- Schur multiplierSecond homology group of a group
- Schur–Zassenhaus theoremThe Schur–Zassenhaus theorem is a theorem in group theory which states that if is a finite
- Scientific collaboration networkScientific collaboration network is a social network where nodes are scientists and links
- Scott AaronsonAmerican computer scientist (born 1981)
- Seifert surfaceIn mathematics, a Seifert surface (named after German mathematician Herbert Seifert) is an
- Selberg sieveIn number theory, the Selberg sieve is a technique for estimating the size of "sifted sets
- Self-adjointIn mathematics, an element of a *-algebra is called self-adjoint if it is the same as its
- Self-adjoint operatorLinear operator equal to its own adjoint
- Selig BrodetskyEnglish mathematician (1888–1954)
- Semi-simplicityIn mathematics, semi-simplicity is a widespread concept in disciplines such as linear alge
- Semidirect productOperation in group theory
- SemiperimeterIn geometry, the semiperimeter of a polygon is half its perimeter. Although it has such a
- Semisimple algebraIn ring theory, a branch of mathematics, a semisimple algebra is an associative artinian a
- Semisimple Lie algebraDirect sum of simple Lie algebras
- Semisimple moduleIn mathematics, especially in the area of abstract algebra known as module theory, a semis
- SenaryBase-6 numeral system
- Sergei ChernikovRussian mathematician
- Sergio CampanatoItalian mathematician (1930–2005)
- Series accelerationIn mathematics, a series acceleration method is any one of a collection of sequence transf
- Series-parallel partial orderIn order-theoretic mathematics, a series-parallel partial order is a partially ordered set
- Sesquilinear formIn mathematics, a sesquilinear form is a generalization of a bilinear form that, in turn,
- Set-builder notationUse of braces for specifying sets
- Shapiro's lemmaIn mathematics, especially in the areas of abstract algebra dealing with group cohomology
- Sharaf al-Din al-TusiIranian mathematician and astronomer
- Sheaf cohomologyTool in algebraic topology
- Sheffer sequenceIn mathematics, a Sheffer sequence or poweroid is a polynomial sequence, i.e., a sequence
- Sherman K. SteinSherman Kopald Stein (born August 11, 1926) is an American mathematician and an author of
- Shift operatorIn mathematics, and in particular functional analysis, the shift operator, also known as t
- Shreeram Shankar AbhyankarAmerican mathematician (1930–2012)
- Sigmoid functionMathematical function having a characteristic S-shaped curve or sigmoid curve
- Simon DonaldsonEnglish mathematician (born 1957)
- Simon StevinFlemish mathematician scientist and music theorist (1548–1620)
- Simple continued fractionNumber represented as a0+1/(a1+1/...)
- Simple Lie groupConnected non-abelian Lie group lacking nontrivial connected normal subgroups
- Simple ringType of ring in non-commutative algebra
- SimplexMulti-dimensional generalization of triangle
- Simplicial homologyConcept in algebraic topology
- Simulated annealingProbabilistic optimization technique and metaheuristic
- Singular integralFunctions in harmonic analysis mathematics
- Singular matrixSquare matrix without an inverse
- Singular point of a curveIn geometry, a singular point on a curve is one where the curve is not given by a smooth e
- Singular traceIn mathematics, a singular trace is a trace on a space of linear operators of a separable
- Singular value decompositionMatrix decomposition
- Six nines in piSequence of digits in the math constant π, incorrectly attributed to Feynman
- SL2(R)In mathematics, the special linear group SL(2, R) or SL2(R) is the group of 2 × 2 real mat
- Small-world networkGraph where most nodes are reachable in a small number of steps
- Smooth structureIn mathematics, a smooth structure on a manifold allows for an unambiguous notion of smoot
- SmoothnessDegree of differentiability of a function or map
- Social network analysis softwareSoftware which facilitates quantitative or qualitative analysis of social networks
- Solenoid (mathematics)Class of compact connected topological spaces
- Solomon LefschetzRussian-born American mathematician (1884–1972)
- Solvable groupGroup with subnormal series where all factors are abelian
- Spatial networkNetwork representing spatial objects
- Special conformal transformationIn projective geometry, a special conformal transformation is a linear fractional transfor
- Special linear groupGroup of matrices with determinant 1
- Special unitary groupGroup of unitary complex matrices with determinant of 1
- Special values of L-functionsIn mathematics, the study of special values of L-functions is a subfield of number theory
- Spectral geometrySpectral geometry is a field in mathematics which concerns relationships between geometric
- Spectral sequenceTool in homological algebra
- Spectral theoremResult about when a matrix can be diagonalized
- Spectral theoryCollection of mathematical theories
- Spectral theory of compact operatorsIn functional analysis, compact operators are linear operators on Banach spaces that map b
- Spectral theory of ordinary differential equationsPart of spectral theory
- Spencer BlochAmerican mathematician
- Sphere bundleIn the mathematical field of topology, a sphere bundle is a fiber bundle in which the fibe
- Spin representationIn mathematics, the spin representations are particular projective representations of the
- Split Lie algebraIn the mathematical field of Lie theory, a split Lie algebra is a pair where is a Lie alge
- Split-complex numberReals with an extra square root of +1 adjoined
- Square matrixMatrix with the same number of rows and columns
- Square pyramidPyramid with a square base
- Stable homotopy theoryIn mathematics, stable homotopy theory is the part of homotopy theory (and thus algebraic
- Standard basisVectors whose components are all 0 except one that is 1
- Standard conjectures on algebraic cyclesSet of conjectures in algebraic geometry
- Stanislav MolchanovStanislav Alexeyevich Molchanov (Russian: Станислав Алексеевич Молчанов) is a Soviet and A
- Stanisław ŚwierczkowskiStanisław (Stash) Świerczkowski (16 July 1932 – 30 September 2015) was a Polish mathematic
- Stanley–Reisner ringIn mathematics, a Stanley–Reisner ring, or face ring, is a quotient of a polynomial algebr
- Stars (M. C. Escher)Stars is a wood engraving print created by the Dutch artist M. C. Escher in 1948, depictin
- Stefan BergmanAmerican mathematician (1895–1977)
- Stephen SmaleAmerican mathematician (born 1930)
- Steven KleimanSteven Lawrence Kleiman (born March 31, 1942) is an American mathematician.
- Stick numberIn the mathematical theory of knots, the stick number is a knot invariant that intuitively
- Stochastic block modelConcept in network science
- Strong dual spaceIn functional analysis and related areas of mathematics, the strong dual space of a topolo
- Stylianos PichoridesStylianos Konstantinos Pichorides (Στυλιανός Κωνσταντίνος Πιχωρίδης, 18 October 1940, Athe
- SubgroupSubset of a group that forms a group itself
- SubmanifoldIn mathematics, a submanifold of a manifold is a subset which itself has the structure of
- SubsequenceMathematical binary relation
- Sum of two cubesMathematical polynomial formula
- SupermatrixIn mathematics and theoretical physics, a supermatrix is a Z2-graded analog of an ordinary
- Support (measure theory)In mathematics, the support (sometimes topological support or spectrum) of a measure on a
- Support functionIn mathematics, the support function hA of a non-empty closed convex set A in describes th
- SurfaceOutermost layer of a physical object
- Sylow theoremsTheorems that help decompose a finite group based on prime factors of its order
- Sylvester MedalBronze medal awarded by the Royal Society (London)
- Symmetric algebra"Smallest" commutative algebra that contains a vector space
- Symmetric functionFunction that is invariant under all permutations of its variables
- Symmetric groupType of group in abstract algebra
- Symmetric matrixMatrix equal to its transpose
- Symmetric monoidal categoryIn category theory, a branch of mathematics, a symmetric monoidal category is a monoidal c
- Symmetric polynomialIn mathematics, a symmetric polynomial is a polynomial P(X1, X2, ..., Xn) in n variables,
- Symmetric space(pseudo-)Riemannian manifold whose geodesics are reversible
- Symmetry groupGroup of transformations under which the object is invariant
- Symplectic geometryBranch of differential geometry and differential topology
- Symplectic groupMathematical group
- Symplectic vector spaceIn mathematics, a symplectic vector space is a vector space over a field (for example the
- Synthetic geometryGeometry without using coordinates