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Overview v=7..15 ▶ v=16..23 ▶ v=24..31 ▶

v=7 v=8 v=9 v=10 v=11 v=12 v=13 v=14 v=15

v=16 v=17 v=18 v=19 v=20 v=21 v=22 v=23

v=24 v=25 v=26

Overview k=2 or ρ=2 ▶ k=3 and ρ=3 ▶ k=3,ρ=4,q=2 ▶ k=3,ρ=4,q=3 ▶ k=4,ρ=3,q=2 ▶

Netto BIBDs

k=2, ρ>2 applet for above k=2, ρ>2, ρ composite k>2, ρ=2 applet for above Plane of type B1 from PG(3,q^2ν) Hyperplane of type D1 from PG(4,q^2ν)

k=3, ρ=3 Plane from the above (B1) Another such plane (B2)

k=3, ρ=4 Plane of type B1 Another type of B1 plane A plane of type B2 Plane of type B3

k=4, ρ=3 with q=2 3-space of type D1 plane of type B1 from D1 plane of type B2 from D1 plane of type B3 from D1 3-space of type D2

k=3, ρ=4 Plane of type B1 Another plane of type B1 Plane of type B2 Plane of type B3