Mathematics
Articles about numbers, structures, logic and mathematical concepts.
History of mathematics
A concise, structured account of how mathematical ideas and practices developed across cultures, from ancient counting systems to modern abstract theory and applications.
Hole
Hole (opening or empty space in a solid object)
Holland's schema theorem
Holomorphic function
A holomorphic function is a complex function that is complex-differentiable on an open set. This article explains the definition, key consequences, examples, history, and how it di
Homology (mathematics)
Homology (mathematics): an introduction and overview
Homotopy
Horn clause
Hour
Hour (time unit)
Hull
Hull: meanings, structures, mathematics, places and people
Hyperbola
Hyperbola: definition, equations, properties, and applications
A comprehensive overview of the hyperbola: geometric definition, standard equations, key features (foci, asymptotes), parameterizations, historical notes, and common applications.
Hypercube
Hypercube (n-dimensional cube)
An n-dimensional generalization of a square and cube: convex polytope with 2^n vertices, produced as a Cartesian product of intervals. Describes structure, counts of faces, history
Hyperoperation
Hypotenuse
Hypotenuse: Definition, Properties, History, and Applications
Icosagon
Icosahedron
Idempotence
Identity (mathematics)
Identity element
Identity element (neutral element)
If and only if
If and only if (logical biconditional)
Ii
Ii — meanings, uses, and notable instances
Imaginary number
Imaginary unit
Imperial units
Implication (logic)
Implication in logic: material conditional and logical consequence
Improper rotation
Inch
Inclusive disjunction
Independence (mathematical logic)
Independence in Mathematical Logic
Inductive reasoning
Inequality
Inequality (mathematics): notation, properties and applications
Overview of mathematical inequalities: symbols, basic rules for manipulation, common named inequalities, methods for solving, and their roles in analysis, optimization and probabil
Inference
Inference: reasoning from premises to conclusions
Inference (statistics)
Infinite monkey theorem
Infinitesimal
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Infinity
Infix notation
Inflection point
Information entropy
Information entropy: measure, meaning, and applications
Information theory
Injective function
Injective function (one-to-one)
An injective (one-to-one) function maps distinct inputs to distinct outputs. This article explains definitions, equivalent formulations, basic properties, examples, non-examples, a
Insertion sort
Insertion sort — a simple in-place comparison sorting algorithm
Integer
Integer overflow
Integer overflow (computer arithmetic)
Integral
Integral (calculus): concepts, notation, and applications