Flawed Proofs
- 0=1
- 1 Equals 0
- 1 Equals 2
- Bertelsen's Number
- Carmichael's Totient Function Conjecture
- Categorical Game
- Complex Number Paradox
- Curry Triangle
- Dissection Fallacy
- Errera Graph
- Fallacy
- Fermat's Last Theorem
- Four-Color Problem
- Four-Color Theorem
- Fritsch Graph
- Heawood Four-Color Graph
- Heronian Triangle
- Home Plate
- Kempe Chain
- Kepler-Poinsot Polyhedron
- Kittell Graph
- Knight Graph
- McGregor Map
- Polygon Circumscribing
- Polygon Inscribing
- Poussin Graph
- Prime Difference Function
- Prime Gaps
- Quadratic Field
- Rational Distances
- Retraction
- Slice-Bennequin Inequality
- Soifer Graph
- Tangram Paradox
- Triangle
- Triangle Dissection Paradox
- Zarankiewicz's Conjecture