Nodes at W1, stated

The main section of the kind, a source with a locator, and a body that passes the rules B01 to B03.

Ideas 1501–1650 of 1702.

Name	Kind	Subject
Cauchy–Euler equation	Definition	Ordinary differential equations
Order of an element	Concept	Group theory and generalizations
Totally bounded set	Definition	General topology
Euclid–Euler theorem	Theorem	Number theory
Factorial	Definition	Combinatorics
Ordered pair	Concept	Mathematical logic and foundations
Sylvester's law of inertia	Theorem	Linear and multilinear algebra; matrix theory
Monotone function	Definition	Order, lattices, ordered algebraic structures
Gambler's ruin	Problem	Probability theory and stochastic processes
Inverse hyperbolic functions	Concept	Special functions
Newton's identities	Theorem	Combinatorics
Continuous uniform distribution	Definition	Probability theory and stochastic processes
Free abelian group	Concept	Group theory and generalizations
Dimension theorem for vector spaces	Theorem	Linear and multilinear algebra; matrix theory
Sylvester's criterion	Theorem	Linear and multilinear algebra; matrix theory
Fermat number	Concept	Number theory
Cholesky decomposition	Theorem	Linear and multilinear algebra; matrix theory
Indefinite integral	Concept	Real functions
Hyperbola	Concept	Geometry
Edge set	Definition	Combinatorics
Distance in a graph	Definition	Combinatorics
Field extension	Definition	Field theory and polynomials
Surface area	Definition	Measure and integration
Normal vector	Concept	Geometry
Expected value	Concept	Probability theory and stochastic processes
Moment-generating function	Concept	Probability theory and stochastic processes
Borel sigma-algebra	Concept	Measure and integration
Extreme value theorem	Theorem	Real functions
Subspace topology	Concept	General topology
Cantor's theorem	Theorem	Mathematical logic and foundations
Bell numbers	Definition	Number theory
Iterated integral	Concept	Real functions
Hölder continuity	Definition	Real functions
Division ring	Definition	Field theory and polynomials
Boolean function	Concept	Order, lattices, ordered algebraic structures
Union	Concept	Mathematical logic and foundations
Continuous function	Concept	Real functions
Laurent series	Definition	Functions of a complex variable
Hypergeometric distribution	Concept	Probability theory and stochastic processes
Tietze extension theorem	Theorem	General topology
Uncountable set	Definition	Mathematical logic and foundations
Elementary symmetric polynomial	Concept	Combinatorics
Quantile function	Concept	Probability theory and stochastic processes
Algebraic closure	Concept	Field theory and polynomials
Hyperbolic tangent	Concept	Special functions
Centroid	Concept	Geometry
Arc length	Definition	Real functions
Winding number	Definition	Algebraic topology
Altitude of a triangle	Definition	Geometry
Reflexive relation	Concept	Mathematical logic and foundations
Uniform limit theorem	Theorem	Sequences, series, summability
Boolean algebra	Concept	Order, lattices, ordered algebraic structures
Simple continued fraction	Concept	Number theory
Poisson distribution	Concept	Probability theory and stochastic processes
Negative binomial distribution	Concept	Probability theory and stochastic processes
Trace of a matrix	Concept	Linear and multilinear algebra; matrix theory
Independence of random variables	Definition	Probability theory and stochastic processes
Cantor's diagonal argument	Concept	Mathematical logic and foundations
Geometric distribution	Definition	Probability theory and stochastic processes
Wallis product	Theorem	Number theory
Jacobi symbol	Definition	Number theory
Rational function	Concept	Real functions
Reflexive relation	Definition	Mathematical logic and foundations
Multinomial theorem	Theorem	Combinatorics
Meagre set	Concept	General topology
Function	Definition	Mathematical logic and foundations
Finitely generated module	Definition	Commutative algebra
Derangement	Concept	Combinatorics
Orthogonal complement	Concept	Linear and multilinear algebra; matrix theory
Surjective function	Definition	Mathematical logic and foundations
Poisson limit theorem	Theorem	Probability theory and stochastic processes
Limit of a sequence	Definition	Sequences, series, summability
Sieve of Eratosthenes	Concept	Number theory
Semigroup	Concept	Group theory and generalizations
Squeeze theorem	Theorem	Sequences, series, summability
Multivariate normal distribution	Concept	Statistics
Equicontinuity	Concept	General topology
Negative binomial distribution	Definition	Probability theory and stochastic processes
Acyclic graph	Definition	Combinatorics
Rotation	Definition	Geometry
Euclidean space	Object	Geometry
Spectrum of a matrix	Concept	Linear and multilinear algebra; matrix theory
Laplacian	Definition	Partial differential equations
Negation	Definition	Mathematical logic and foundations
Farey sequence	Concept	Number theory
Prime-counting function	Definition	Number theory
Dini's theorem	Theorem	Sequences, series, summability
Linear isomorphism	Definition	Linear and multilinear algebra; matrix theory
Galois group	Concept	Field theory and polynomials
Composition series	Concept	Group theory and generalizations
Unit of a ring	Concept	Associative rings and algebras
Galois group	Definition	Field theory and polynomials
Euclidean plane	Object	Geometry
Median of a triangle	Concept	Geometry
Factorial	Concept	Combinatorics
Second fundamental theorem of calculus	Theorem	Real functions
Normal matrix	Definition	Linear and multilinear algebra; matrix theory
Normal vector	Definition	Geometry
Disjoint sets	Concept	Mathematical logic and foundations
Rooted tree	Concept	Combinatorics
Graph of a function	Definition	Mathematical logic and foundations
Modus ponens	Concept	Mathematical logic and foundations
Inflection point	Definition	Real functions
Diagonalisable matrix	Definition	Linear and multilinear algebra; matrix theory
Brooks' theorem	Theorem	Combinatorics
Outcome	Definition	Probability theory and stochastic processes
Centroid	Definition	Geometry
Fermat's Last Theorem	Theorem	Number theory
Variation of parameters	Concept	Ordinary differential equations
Matrix addition	Concept	Linear and multilinear algebra; matrix theory
Directional derivative	Definition	Real functions
Mersenne number	Concept	Number theory
Conditional expectation	Definition	Probability theory and stochastic processes
Cayley table	Concept	Group theory and generalizations
Absolute convergence	Concept	Sequences, series, summability
Identity theorem	Theorem	Functions of a complex variable
Augmented matrix	Definition	Linear and multilinear algebra; matrix theory
Open ball	Concept	General topology
Cayley graph	Definition	Combinatorics
Divisor function	Definition	Number theory
Jacobian matrix	Definition	Real functions
Hilbert's basis theorem	Theorem	Commutative algebra
Essential singularity	Definition	Functions of a complex variable
Principal branch	Definition	Functions of a complex variable
Affine span	Concept	Geometry
Free abelian group	Definition	Group theory and generalizations
Irreducible element	Concept	Commutative algebra
Simple group	Concept	Group theory and generalizations
Direct product of groups	Definition	Group theory and generalizations
Intersecting chords theorem	Theorem	Geometry
Pascal's rule	Theorem	Combinatorics
Line integral of a vector field	Definition	Real functions
Ordinal number	Concept	Mathematical logic and foundations
Group action	Definition	Group theory and generalizations
Critical point	Concept	Real functions
Root of unity	Concept	Number theory
Skewness	Concept	Statistics
Floor function	Definition	Real functions
Catalan numbers	Concept	Combinatorics
Choice function	Definition	Mathematical logic and foundations
Moore–Penrose inverse	Concept	Linear and multilinear algebra; matrix theory
Conformal map	Concept	Functions of a complex variable
Mercator series	Theorem	Functions of a complex variable
Cycle	Concept	Combinatorics
Pell's equation	Concept	Number theory
Diffeomorphism	Definition	Global analysis, analysis on manifolds
Stirling numbers of the first kind	Definition	Number theory
Separable space	Concept	General topology
Minimum spanning tree	Definition	Combinatorics
Kernel of a homomorphism	Definition	Group theory and generalizations