Mathematics

Articles about numbers, structures, logic and mathematical concepts.

Articles in this category: 1129 Updated: April 29, 2026 Page 12 / 24

Interval (mathematics)

Interval arithmetic

Interval arithmetic: verified numerical computation and error bounding

An introduction to interval arithmetic: definitions, basic operations, extensions, uses for error bounding and verified computing, and key limitations including overestimation and

Inverse

Inverse (mathematics)

Inverse element

Inverse function

A function that reverses the mapping of another: definition, notation, existence conditions (injective/surjective), methods to compute inverses, common examples and graphical and c

Invertible matrix

Irrational number

Irula numerals

Irula numerals: counting, structure and cultural context

ISO 8601

Isometry

Isometry: distance-preserving transformations in geometry

Isosceles triangle

Iteration

Iteration in Computing, Mathematics, and Design: Repetition, Loops, and Iterative Methods

K

K — the eleventh letter of the English alphabet

Kalman filter

Kalman filter: recursive state estimation for noisy systems

Kantorovich theorem

Kantorovich theorem: convergence conditions for Newton's method

Kepler conjecture

Kepler conjecture (densest packing of equal spheres in three dimensions)

Key (cryptography)

Key schedule

Key schedule (cryptography)

Key whitening

Keystream

Kilosecond

King's Gambit

Klein bottle

Knight's tour

Knot (speed)

Knot (unit of speed)

Knot theory

Known-plaintext attack

Knuth's up-arrow notation

Knuth's up-arrow notation: expressing extremely large integers

Kruskal's algorithm

L

Lagrange's theorem (group theory)

Lakh

Lakh (100,000): South Asian numeric unit

Lambda

Lambda (Greek letter Λ, λ) — forms, history and common uses

Lambda calculus

Lambda calculus: foundations, concepts, and influence

Langlands program

Laplace operator

Laplace transform

Laplace's equation

Laplace's equation: definition, properties, and applications

Laplace's equation is a second‑order linear partial differential equation whose solutions (harmonic functions) describe steady-state potentials in physics and arise in many mathema