User:Richard Pinch/Redlinks

A list of redlinks I've created with the intention of filling in at some time:

From Centre (mathematics):

• In an algebraic structure, elements that commute with every element of the structure
  • The centre of a group, elements that commute with every group element
• The centre of a circle
• The centre of mass, centroid or barycentre of a geometrical figure
• In triangle geometry
  • The centroid, intersection of the medians
  • The circumcentre, intersection of the perpendicular bisectors of the sides, centre of the circle through the vertices
  • The nine-point centre
  • The orthocentre, intersection of the altitudes
  • The incentre, centre of a circle tangent to the sides
  • The excentres, centres of the three circles internally tangent to one side and externally to the other two

From Composition (mathematics):

• Function composition: the composition or successive application of functions
• Composition of relations
• Composition series in group theory

From Chain (mathematics):

• A linearly ordered sequence of elements of a partial order
• An element of a group in a chain complex in homological algebra
• The chain rule for the derivative of function composition

From Identity matrix: In matrix algebra, the identity matrix is a square matrix which has all the entries on the main diagonal equal to one and all the other, off-diagonal, entries equal to zero. The identity matrix acts as the identity element for matrix multiplication.

From Talk:Series (mathematics):

• Series (analysis), the cumulative sum of a given sequence of terms. Special types include
  • Dirichlet series
  • Fourier series
  • Power series (currently a redirect)
  • Puiseaux series
• Series (group theory), a chain of subgroups of a group. Special types include
  • Central series
  • Chief series
  • Composition series
  • Normal series
• Series (lattice theory), a chain in a partially ordered set
• Time series in probability and statistics

From Centre of a group:

• Centraliser
• Centre (mathematics)

From Identity element:

• Existence of an identity element is one of the properties of a group or monoid.
• An identity matrix is the identity element for matrix multiplication.
• Identity (mathematics)

From Distributivity:

• There are three closely connected examples where each of two operations distributes over the other:
  • In set theory, intersection distributes over union and union distributes over intersection;
  • In propositional logic, conjunction (logical and) distributes over disjunction (logical or) and disjunction distributes over conjunction;
  • In a Boolean algebra, join distributes over meet and meet distributes over join.

From Commutativity: a property of binary operations or of operators on a set

From Cantor set: The Cantor set is ... second countable, dense-in-itself, totally disconnected.

Miscellaneous

• Injective function
• Surjective function
• Empty set