Hadamard Design
A Symmetric Block Design (
, 
, 
) which is equivalent to a Hadamard Matrix of order
. It is conjectured that Hadamard designs exist for all integers 
, but this has not yet been proven.This elusive proof (or disproof) remains one of the most important unsolved problems in Combinatorics.
References
Dinitz, J. H. and Stinson, D. R. ``A Brief Introduction to Design Theory.'' Ch. 1 in Contemporary Design Theory: A Collection of Surveys (Ed. J. H. Dinitz and D. R. Stinson). New York: Wiley, pp. 1-12, 1992.
- Finite Game
- Finite Group
- Finite Group D3
- Finite Group D4
- Finite Group e
- Finite Group Q8
- Finite Group Z2
- Finite Group Z2Z2
- Finite Group Z2Z2Z2
- Finite Group Z2Z4
- Finite Group Z3
- Finite Group Z4
- Finite Group Z5
- Finite Group Z6
- Finite Group Z7
- Finite Group Z8
- Finite Mathematics
- Finite Simple Group
- Finite Simple Group Classification Theorem
- Finite-to-One Factor
- Finsler Geometry
- Finsler-Hadwiger Theorem
- Finsler Manifold
- Finsler Metric
- Finsler Space