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Mathematics

Mathematics

Study pure and applied mathematics at all levels with curated textbooks, courses, and problem sets. From basic arithmetic to advanced calculus and beyond.

31 Subcategories

A

Arithmetic & Pre-Algebra

The essentials before algebra: fractions, decimals, integers, exponents, and number sense.

11
Topics
105
Resources
G

Geometry & Trigonometry

Shapes, angles, and space: Euclidean and analytic geometry, circles, and the trigonometry that measures them.

12
Topics
96
Resources
N

Numerical Analysis & Topology

Numerical methods and topology, where computation meets abstract structure.

3
Topics
20
Resources
A

Abstract Algebra

Groups, rings, and fields: the abstract structures underlying modern mathematics, up to Galois theory.

11
Topics
111
Resources
A

Algebra

From linear equations to functions, logarithms, and inequalities: the algebra that unlocks higher math.

11
Topics
121
Resources
A

Algebraic Geometry

Where algebra meets geometry: varieties, curves, schemes, and cohomology.

10
Topics
76
Resources
A

Algebraic Topology

Topology through algebraic eyes: fundamental groups, homology, cohomology, and fiber bundles.

10
Topics
70
Resources
C

Calculus

Limits, derivatives, and integrals: the mathematics of change and the theorems that hold it together.

11
Topics
242
Resources
C

Category Theory

The mathematics of mathematics: categories, functors, limits, and adjunctions.

11
Topics
66
Resources
C

Combinatorics

The art of counting: permutations, combinations, generating functions, and combinatorial designs.

10
Topics
86
Resources
C

Complex Analysis

Calculus over the complex numbers: analytic functions, Cauchy's theorem, and conformal mapping.

10
Topics
81
Resources
D

Differential Equations

Equations that describe change: ODEs, boundary value problems, Laplace transforms, and numerical solutions.

11
Topics
154
Resources
D

Differential Geometry

Geometry with calculus: manifolds, curvature, geodesics, and Lie groups.

10
Topics
93
Resources
D

Differential Topology

Smooth manifolds and their global structure: tangent spaces, vector bundles, and de Rham cohomology.

10
Topics
84
Resources
D

Discrete Math

The math of computer science: logic, graphs, combinatorics, number theory, and recurrences.

11
Topics
210
Resources
D

Dynamical Systems

How systems evolve over time: stability, bifurcations, attractors, and chaos.

10
Topics
139
Resources
F

Functional Analysis

Analysis in infinite dimensions: Banach and Hilbert spaces, operators, and distributions.

10
Topics
83
Resources
G

Graph Theory

Networks in the abstract: connectivity, coloring, matchings, and flows.

10
Topics
72
Resources
H

Harmonic Analysis

Decomposing functions into waves: Fourier series and transforms, convolution, and Sobolev spaces.

10
Topics
84
Resources
L

Linear Algebra

Vectors, matrices, and linear maps: eigenvalues, determinants, and the workhorse of applied math.

11
Topics
176
Resources
M

Mathematical Logic

The foundations of reasoning: formal systems, model theory, computability, and Godel's theorems.

11
Topics
106
Resources
M

Mathematical Physics

The mathematics behind physics: classical and quantum mechanics, relativity, and electrodynamics.

10
Topics
187
Resources
M

Mathematics

Cross-cutting mathematical topics spanning algebra, analysis, probability, and number theory.

6
Topics
173
Resources
M

Measure Theory

The rigorous theory of size and integration: Lebesgue measure, Lp spaces, and Fubini's theorem.

10
Topics
71
Resources
N

Number Theory

The study of the integers: divisibility, congruences, primes, and the math behind cryptography.

11
Topics
136
Resources
N

Numerical Linear Algebra

Matrix computation at scale: factorizations, iterative and Krylov methods, and numerical stability.

11
Topics
61
Resources
P

Probability & Statistics

Chance made rigorous: probability theory, hypothesis testing, Bayesian methods, and statistical inference.

21
Topics
243
Resources
R

Real Analysis

Calculus made rigorous: sequences, limits, continuity, and Lebesgue integration.

12
Topics
161
Resources
R

Representation Theory

Groups as matrices: characters, irreducible representations, and Lie algebras.

10
Topics
57
Resources
S

Set Theory

The foundation of mathematics: sets, cardinality, ordinals, the axiom of choice, and the continuum hypothesis.

10
Topics
78
Resources
A

Applied Mathematics

Mathematics at work: modeling, optimization, numerical methods, and financial and cryptographic math.

5
Topics
17
Resources