Wikipedia:Missing science topics/ExistingMathS

Saddle point approximation

Saddle point method

Saddle surface

Safe prime

Saint Anthony's cross

Saint Petersburg paradox

Salesman problem

Samaritan

Sample mean

Sample median

Sample size

Sample Space or Sample space

Sampling function

Sampling theorem

Sandwich theorem

Sangaku problem

Sard theorem

Satisfiability problem

Satisfiable

Savitzky-Golay filter

Scalar function

Scalar matrix

Scalar Potential or Scalar potential

Scale factor

Scale-space theory

Scalene triangle

Scatter diagram

Scattering matrix

Scattering theory

Scatterplot

Sceptic

Schauder fixed point theorem

Scheduling theory

Schinzel's hypothesis

Schlicht function

Schlicht functions

Schnirelmann constant

Schock prize

Schoen-yau conjecture

Scholz Conjecture or Scholz conjecture

Schoof-Elkies-Atkin algorithm

Schoolgirl problem

Schouten-Nijenhuis bracket

Schröder-Bernstein theorem

Schrödinger Equation

Schrödinger's wave equation

Schubert cell

Schubert cycle

Schur lemma

Schur multiplicator

Schur theorem

Schur's Lemma

Schwartz function

Schwartz's kernel theorem

Schwartz-Bruhat function

Schwarz's inequality

Schwarz's lemma

Schwarz-Christoffel mapping

Schwarzschild geometry

Schwarzschild solution

Schönflies theorem

Scientific Notation

Scintillating grid illusion

Scott continuous

Scott topology

Scruple

Search Algorithm

Secant number

Second countable

Second countable space

Second derivative test

Second fundamental tensor

Second group isomorphism theorem

Second isomorphism theorem

Second ring isomorphism theorem

Section of a fiber bundle

Secular equation

Seek time

Segre imbedding

Segre map

Seifert fibration

Seifert manifold

Seifert matrix

Self-avoiding polygon

Self-dual

Self-dual polyhedron

Self-loop

Selfridge's conjecture

Semi-continuous

Semi-continuous function

Semi-continuous mapping

Semi-cubic parabola

Semi-definite form

Semi-direct product

Semi-group

Semi-lattice

Semi-Markov process

Semi-norm

Semi-regular polyhedra

Semi-ring

Semi-simple algebra

Semi-simple group

Semi-simple Lie algebra

Semi-simple Lie group

Semi-simple module

Semi-simple ring

Semicolon derivative

Semicontinuous

Semigroup ring

Semihereditary ring

Semilatus rectum

Semilocal ring

Semilocally simply connected

Semimajor axis

Semimetric

Semiminor axis

Semisimple group

Semisimple Lie group

Semisimple ring

Semisymmetric graph

Sense-preserving mapping

Sentential calculus

Sentential formula

Sentential variable

Separable closure

Separated scheme

Separation axioms

Separation of Variables

Septagon

Septendecillion

Septillion

Sequence of series

Sequentially compact

Sequentially continuous

Sequentially-compact space

Series reversion

Series term

Series-parallel graph

Series-parallel network

Serre fibration

Serre subcategory

Serret-Frenet equations

Serret-Frenet formulas

Set closure

Set difference

Set direct product

Set extension

Set modulus

Set partition

Set system of finite character

Set Theory

Seven bridges of Königsberg

Seven bridges problem

Seventeen or bust

Several complex variables

Sexdecillion

Sextillion

Sexy primes

Sgn

Shah function

Shanks-Tonelli algorithm

Shannon entropy

Shannon sampling theorem

Shannon theorem

Shannon's entropy

Shannon's noiseless coding theorem

Shape operator

Sharkovsky's theorem

Sharpe Ratio or Sharpe ratio

Sheaf theory

Sheafification

Shear matrix

Sheffer polynomial

Sheffer Stroke or Sheffer stroke

Sherman-Morrison formula

Shift transformation

Shimura curve

Shimura-Taniyama conjecture

Shimura-Taniyama-Weil conjecture

Short exact sequence

Shortest path

Shri Dattathreya Ramachandra Kaprekar

Shuffle

Shur's inequality

Si-ci-spiral

Siamese dodecahedron

Sici spiral

Siegel theorem

Siegel's theorem

Siegel's upper half-space

Sierpinski carpet

Sierpinski constant

Sierpinski curve or Sierpiński curve

Sieve of eratosthenes

Sigma additivity

Sigma-algebra

Sigma-compact topological space

Sigma-compactness

Sigma-finite

Sigmoid curve

Signature of a manifold

Significance arithmetic

Significance level

Significance test

Significant digits

Significant figure

Significant Figures or Significant figures

Signum function

Silver mean

Silver rectangle

Silverman-Toeplitz theorem

SIMD

Similar matrices

Similar matrix

Similar triangles

Simon donaldson

Simple algebra

Simple continued fraction

Simple directed graph

Simple field extension

Simple finite group

Simple graph

Simple Harmonic Motion or Simple harmonic motion

Simple pole

Simple program

Simple root

Simple zero

Simplex Algorithm

Simplex method

Simplicial Complex

Simplicial object

Simply connected

Simply transitive

Simpson formula

Simpson's formulas

Simpson's Rule

Simson straight line

Simson's line

Simulated Annealing or Simulated annealing

Sinai billiards

Sinc

Sine

Sine integral

Sine theorem

Sines Law

Single-valued function

Singleton set

Singly even number

Singular Integral or Singular integral

Singular set

Singular support

Singular Value Decomposition

Singular values

Sinh-Gordon equation

Sinusoid

Sir Arthur Schuster

SIR Model

Skein relationship

Skew field

Skew Hermitian matrix

Skew polyhedron

Skew polyomino

Skew symmetric matrix

Skew-field

Skew-symmetric bilinear form

Skewes number

Skewes' number

Sklar's theorem

Skolem function

Skolem paradox

Skolem-Noether theorem

Skolemization

Skorokhod topology

Skyrme field

Slant height

Slavic numerals

Slide Rule or Slide rule

Slip Knot or Slip knot

Slothouber-Graatsma puzzle

Smale horseshoe map

Smale's h-cobordism theorem

Small category

Small circle

Small rhombicosidodecahedron

Small rhombicuboctahedron

Small Stellated Dodecahedron or Small stellated dodecahedron

Small world network

Smarandache function

Smarandache-Wellin number

Smarandache-Wellin prime

Smith brothers

Smooth function

Smooth manifold

Smooth map

Smooth surface

SNCF metric

Snedecor's F-distribution

Snobol

Snub cuboctahedron

Sobolev classes (of functions)

Soccer ball

Sociable numbers

Social choice

Social network theory

Socrates Scholasticus

Sofia Kovalevskaya

Soft sheaf

SOHCAHTOA

Sol geometry

Soldner's constant

Solenoidal field

Solid Geometry or Solid geometry

Solitary number

Solovay-Strassen test

Soluble by radicals

Soluble group

Solv manifold

Compact Solv manifold

Solvable Lie group

Somer-Lucas pseudoprime

Somos's quadratic recurrence constant

Sophie germain

Sophie Germain prime

SOR method

Sorgenfrey line

Sorites Paradox or Sorites paradox

Souslin's hypothesis

South pole

Space curve

Space forms

Space groups

Space-filling function

Space-time

Spacelike

Spanier-Whitehead duality

Spanning Tree or Spanning tree

Spearman rank correlation coefficient

Special function

Special Jordan algebra

Special orthogonal group

Special orthogonal matrix

Special point

Special unitary matrix

Specific conductivity

Spectral measure

Spectral norm

Spectral power density

Spectral theory of differential operators

Spectral type

Spectrum of an operator

Spectrum sequence

Spence's function

Sperner lemma

Sperner system

Sperner theorem

Sperner's Lemma

Spherical

Spherical Aberration

Spherical Bessel differential equation

Spherical bessel function

Spherical Bessel function of the first kind

Spherical Bessel function of the second kind

Spherical Bessel function of the third kind

Spherical coordinates

Spherical distance

Spherical excess

Spherical functions

Spherical Hankel function of the first kind

Spherical Hankel function of the second kind

Spherical harmonic

Spherical mirror

Spherical modified Bessel function of the first kind

Spherical polar coordinates

Spherical polygon

Spherical symmetry

Spherical triangle

Spheroidal coordinates

Spheroidal function

Spheroidal harmonic

Spikey

Spindle torus

Spinode

Spinor field

Spinor group

Spinor representation

Spira mirabilis

Spirals

Split short exact sequence

Sporadic simple group

Sports

Springer representation

Sqrt

Squarable

Square bracket

Square dipyramid

Square grid

Square integrable

Square polyomino

Square prism

Square Root

Square root of polynomial

Square the circle

Square Wave or Square wave

Square-free

Square-free number

Squared square

Squarefree

Squarefree factorization

Squarefree word

Squeeze rule

Squeezing theorem

Srinivasa ramanujan

St. Ives problem

Stability matrix

Stable fixed point

Stable Marriage Problem

Stair function

Staircase function

Stalk of a sheaf

Standard Deviation

Standard normal distribution

Standard tori

Standardized score

Stanley-Wilf conjecture

Star convex

Star figure

Star of a function element

Star of david

Stark conjecture

Stark's conjecture

State space

Stationary phase formula

Stationary stochastic process

Stationary value

Statistical analysis

Statistical correlation

Statistical Dispersion or Statistical dispersion

Statistical modelling

Statistical power

Statistical quality control

Statistical range

Statistical test

Steenrod five lemma

Steenrod operation

Steenrod reduced power

Steenrod square

Steenrod-Eilenberg axioms

Stefan condition

Stefan-Boltzmann law

Stein space

Steinberg module

Steiner surface

Steiner tree

Steiner triple system

Steiner's theorem

Steinhaus-Moser notation

Stella octangula

Stem-and-leaf diagram

Stereogram

Stern-Brocot tree

Stevedore's knot

Stewart's Theorem

Stiefel-whitney class

Stiefel-Whitney number

Stieltjes integral

Stiff differential equation

Stirling formula

Stirling number of the first kind

Stirling number of the second kind

Stirling polynomial

Stirling's formula

Stirling's series

Stochastic basis

Stochastic Calculus or Stochastic calculus

Stochastic integral

Stochastic Process

Stochastic Resonance or Stochastic resonance

Stokes theorem

Stokes' Theorem or Stokes' theorem

Stolz-Cesaro theorem

Stone-cech compactification

Stone-von Neumann theorem

Stone-Weierstrass theorem

Stone-Čech compactification

Stopping rule

Straight angle

Straight line

Straight polyomino

Strange attractor

Strangers

Strategy (in game theory)

Stratified manifold

Stratified sample

Strict inequality

Strict order

Strictly lower triangular matrix

Strictly non-palindromic number

Strictly upper triangular matrix

String rewriting

String rewriting system

Strobogrammatic prime

Strong AI thesis

Strong Frobenius pseudoprime

Strong Goldbach conjecture

Strong law of large numbers

Strong Law of Small Numbers

Strong Lucas pseudoprime

Strong mixing

Strong perfect graph conjecture

Strong Weil curve

Strongly connected graph

Structurally stable

Structure constant

Structure preserving mappings

Structure sheaf

Structures

Sturm chain

Sturm theorem

Sturm's Theorem

Sturm-Liouville equation

Sturm-Liouville operator

Sturm-Liouville problem

Sturm-Liouville theory

Sturmian Sequence or Sturmian sequence

Sub-linear

Subadditive

Subbasis

Subcontrary mean

Subdifferential

Subdivision (graph theory)

Subfactorial

Submatrix

Submodule

Submonoid

Subnormal series

Subscript

Subsemigroup

Subsets

Substantive derivative

Substitution for integration

Substitution rule

Subtend

Subtrahend

Subtree

Successive overrelaxation method

SuDoku

Sufficient

Sufficiently large

Sultan's dowry problem

Sum of series

Summand

Summation methods

Super-manifold

Super-Poulet Number or Super-Poulet number

Superadditive

Supercommutative

Superdiagonal

Superharmonic function

Superscript

Superset

Supersingular

Supplementary angle

Supplementary angles

Support of a distribution

Support of a function

Support of distribution

Support of function

Supremum

Supremum limit

Supremum norm

Surface Area or Surface area

Surface normal

Surjection

Surjective

Surjective map

Surprise examination paradox

Surreal numbers

Survivor function

Suslin hypothesis

Suslin problem

Swung dash

Sylow

Sylow p-subgroup

Sylow p-subgroups

Sylow subgroup

Sylow's first theorem

Sylow's third theorem

Sylvester's law

Sylvester-Gallai theorem

Symbol of an elliptic operator

Symbolic computation

Symbolic logic

Symbolic system

Symmedian point

Symmetric

Symmetric design

Symmetric operator

Symmetric Tensor

Symplectic form

Symplectic Geometry or Symplectic geometry

Symplectic quotient

Symplectic structure

Synodic month

Syntactic structure

Syracuse problem

System of distinct representatives

System programming

Szemeredi's theorem

Szemerédi's regularity lemma

Szemerédi-Trotter theorem

Szilassi Polyhedron or Szilassi polyhedron