Overview Searches Geometric constructions Sundry

Overview Constructions Existence Properties Searches

Overview Constructions Existence Other Nested Designs Searches Table of designs

Overview Definition

Home System requirements References Site Map What's new?

Overview From doubly homogeneous groups ▶ Designs with λ=1 and k>3 ▶ Geometric construction ▶ Construction from rings ▶

Overview Applet for k=3

Overview Related designs ▶ Geometric Examples ▶ Difference Squares

Overview v=8 v=12 v=16 v=18 v=20

Construction: k=3 Construction: k>3 Table of multipliers: k=3 Table of multipliers: k=5 Table of multipliers: k=7 Table of multipliers: k>7 Applet to get multiplier Applet to get blocks

Construction Example Construction contd Example contd

Construction Table of multipliers: k=5 Table of multipliers: k=7

Construction Examples Table of multipliers

Discussion Difference patterns

OBIBD from a PG OBIBD from a Netto BIBD Correlations