What’s the Most Abstract Math Concept You’ve Studied?

Ranking
Live
1
Set Theory & Cardinality
Infinite sets have different sizes. Wait, what?
166 Votes
18.99% Proportion
2
Category Theory
Math about math—structures, mappings, and ultimate abstraction.
156 Votes
17.85% Proportion
3
Proof by Induction
Like dominoes falling forever—prove one, and the rest must follow.
133 Votes
15.22% Proportion
4
Limits & Infinity
Where numbers go, but never quite arrive. Hello, ∞.
124 Votes
14.19% Proportion
5
Topology
(A donut is a mug) A world where stretching, twisting, and squishing preserve identity.
99 Votes
11.33% Proportion
6
Imaginary Numbers
(i = √–1) Numbers that don’t exist on the number line… but solve real problems.
95 Votes
10.87% Proportion
7
Abstract Algebra
(Groups, Rings, Fields) Math about sets where “+” and “×” don’t always mean what you think.
56 Votes
6.41% Proportion
8
Non-Euclidean Geometry
Space bends. Lines curve. Triangles don’t add up to 180°. Reality… updated.
45 Votes
5.15% Proportion
We use cookies to improve your browsing experience on our website. Click "Accept" to allow cookies or "Decline" to reject them. Learn more