Fisher's Block Design Inequality

A balanced incomplete Block Design (, , , , ) exists only for (or, equivalently,).

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.

• Tangent
• Tangent Bifurcation
• Tangent Bundle
• Tangent Developable
• Tangent Hyperbolas Method
• Tangential Angle
• Tangential Triangle
• Tangential Triangle Circumcenter
• Tangent Indicatrix
• Tangent Line
• Tangent Map
• Tangent Number
• Tangent Plane
• Tangents Law
• Tangent Space
• Tangent Vector
• Tangle
• Tanglecube
• Tangled Hierarchy
• Tangram
• Tanh
• Taniyama Conjecture
• Taniyama-Shimura Conjecture
• Tank
• Tantrix