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 901–1050 of 1702.

Name	Kind	Subject
Nine-point circle	Definition	Geometry
Riemann sphere	Concept	Functions of a complex variable
Sperner's theorem	Theorem	Combinatorics
Bernoulli distribution	Definition	Probability theory and stochastic processes
Riemann sum	Concept	Real functions
Euler method	Concept	Numerical analysis
Linear combination	Definition	Linear and multilinear algebra; matrix theory
Graph of a function	Concept	Mathematical logic and foundations
Stirling numbers of the second kind	Concept	Number theory
Graph	Definition	Combinatorics
Analytic function	Definition	Real functions
Convergence in distribution	Definition	Probability theory and stochastic processes
Triangle	Definition	Geometry
Path	Definition	Combinatorics
Affine map	Concept	Geometry
Regular space	Definition	General topology
Residue	Definition	Functions of a complex variable
Turán's theorem	Theorem	Combinatorics
Connected component	Concept	Combinatorics
Rank of a linear map	Definition	Linear and multilinear algebra; matrix theory
Presentation of a group	Concept	Group theory and generalizations
Series	Definition	Sequences, series, summability
Exponential generating function	Concept	Combinatorics
Boundary	Definition	General topology
Kronecker product	Definition	Linear and multilinear algebra; matrix theory
Combinatorics	Concept	Combinatorics
Cauchy's theorem	Theorem	Group theory and generalizations
Logical equivalence	Concept	Mathematical logic and foundations
Sum of subspaces	Concept	Linear and multilinear algebra; matrix theory
Sample variance	Definition	Statistics
Lindemann–Weierstrass theorem	Theorem	Number theory
Universal set	Concept	Mathematical logic and foundations
Fundamental theorem of algebra	Theorem	Field theory and polynomials
Kőnig's theorem	Theorem	Combinatorics
Central binomial coefficient	Concept	Combinatorics
Order of an element	Definition	Group theory and generalizations
Ordered pair	Definition	Mathematical logic and foundations
Inverse Laplace transform	Definition	Integral transforms, operational calculus
Bernstein polynomial	Concept	Approximations and expansions
Legendre symbol	Concept	Number theory
Cardinality	Definition	Mathematical logic and foundations
System of linear equations	Definition	Linear and multilinear algebra; matrix theory
Tychonoff's theorem	Theorem	General topology
Integer partition	Concept	Combinatorics
Gaussian elimination	Concept	Linear and multilinear algebra; matrix theory
Existential quantifier	Definition	Mathematical logic and foundations
Saddle point	Concept	Real functions
Minimum spanning tree	Concept	Combinatorics
Concyclic points	Definition	Geometry
Divergent series	Concept	Sequences, series, summability
L'Hôpital's rule	Theorem	Real functions
Divergence theorem	Theorem	Real functions
Square matrix	Concept	Linear and multilinear algebra; matrix theory
Lifting-the-exponent lemma	Lemma	Number theory
Dihedral group	Concept	Group theory and generalizations
Power rule	Proposition	Real functions
Combination	Definition	Combinatorics
Convex set	Definition	Convex and discrete geometry
Path-connected space	Definition	General topology
Distance from a point to a plane	Proposition	Geometry
Automorphism group	Concept	Group theory and generalizations
Zero divisor	Definition	Associative rings and algebras
Singular value	Definition	Linear and multilinear algebra; matrix theory
Factor theorem	Theorem	Commutative algebra
Confidence interval	Definition	Statistics
Differentiable function	Concept	Real functions
Gaussian integers	Object	Number theory
Matrix exponential	Definition	Linear and multilinear algebra; matrix theory
Maclaurin series	Concept	Approximations and expansions
Idempotent matrix	Definition	Linear and multilinear algebra; matrix theory
Associativity	Concept	General algebraic systems
Removable discontinuity	Concept	Real functions
Parallelepiped	Definition	Geometry
Inverse function theorem	Theorem	Real functions
General Leibniz rule	Theorem	Real functions
Ramsey number	Concept	Combinatorics
Regular graph	Definition	Combinatorics
Characteristic subgroup	Concept	Group theory and generalizations
Covariance	Concept	Probability theory and stochastic processes
Bernoulli number	Concept	Number theory
Stirling's formula	Theorem	Approximations and expansions
Wronskian	Concept	Ordinary differential equations
Idempotent matrix	Concept	Linear and multilinear algebra; matrix theory
Basis	Concept	Linear and multilinear algebra; matrix theory
Venn diagram	Concept	Mathematical logic and foundations
Vertex cover	Definition	Combinatorics
Bolzano–Weierstrass theorem	Theorem	Sequences, series, summability
Exponential generating function	Definition	Combinatorics
Directed graph	Concept	Combinatorics
Dirichlet convolution	Definition	Number theory
Primitive root modulo n	Definition	Number theory
Hausdorff maximal principle	Theorem	Mathematical logic and foundations
Ceva's theorem	Theorem	Geometry
Dirac delta function	Object	Functional analysis
Signature of a quadratic form	Definition	Linear and multilinear algebra; matrix theory
Degree of a vertex	Concept	Combinatorics
Nowhere dense set	Definition	General topology
Jordan measure	Concept	Measure and integration
Free group	Concept	Group theory and generalizations
Modulus of a complex number	Definition	Functions of a complex variable
Connected graph	Concept	Combinatorics
Positive definite matrix	Concept	Linear and multilinear algebra; matrix theory
Splitting field	Concept	Field theory and polynomials
Stirling numbers of the first kind	Concept	Number theory
Discrete uniform distribution	Definition	Probability theory and stochastic processes
Lagrange's four-square theorem	Theorem	Number theory
Quadratic formula	Theorem	Field theory and polynomials
Independent set	Definition	Combinatorics
Diffeomorphism	Concept	Global analysis, analysis on manifolds
Antisymmetric relation	Concept	Mathematical logic and foundations
Derivative of an inverse function	Theorem	Real functions
Block diagonal matrix	Definition	Linear and multilinear algebra; matrix theory
Intercept theorem	Theorem	Geometry
Bernoulli's inequality	Theorem	Real functions
Fermat's little theorem	Theorem	Number theory
Conjunction	Definition	Mathematical logic and foundations
Analytic continuation	Concept	Functions of a complex variable
Four colour theorem	Theorem	Combinatorics
Binary operation	Concept	General algebraic systems
Uniform continuity	Concept	Real functions
Line integral of a scalar field	Definition	Real functions
Pythagorean triple	Concept	Number theory
Euler's criterion	Theorem	Number theory
Complementary subspaces	Concept	Linear and multilinear algebra; matrix theory
Dual space	Definition	Linear and multilinear algebra; matrix theory
Equivalent norms	Concept	Functional analysis
Vieta's formulas	Theorem	Field theory and polynomials
Incentre	Concept	Geometry
Step function	Definition	Real functions
Schwarz lemma	Lemma	Functions of a complex variable
Algebraic number	Definition	Number theory
Self-adjoint operator	Definition	Operator theory
Generators of a group	Concept	Group theory and generalizations
Algebraic closure	Definition	Field theory and polynomials
Complement graph	Concept	Combinatorics
Exterior algebra	Concept	Linear and multilinear algebra; matrix theory
Symmetric difference	Concept	Mathematical logic and foundations
Matching	Concept	Combinatorics
Tree	Definition	Combinatorics
Upper triangular matrix	Definition	Linear and multilinear algebra; matrix theory
Product of vector spaces	Definition	Linear and multilinear algebra; matrix theory
One-point compactification	Definition	General topology
Continuum hypothesis	Axiom	Mathematical logic and foundations
Algebraic number	Concept	Number theory
Prime element	Definition	Commutative algebra
Geometric sequence	Definition	Sequences, series, summability
Product of rings	Definition	Associative rings and algebras
Line	Concept	Geometry
Normal matrix	Concept	Linear and multilinear algebra; matrix theory
Existential quantifier	Concept	Mathematical logic and foundations