Date: Sat, Mar 15, 2014
Time: 11:00 - 12:00
Venue: Middle Meeting Room
Title: Tight relative $2$-designs on two shells in the Johnson scheme
In this talk, we will discuss tight relative $2$-designs on $2$ shells in Johnson association schemes $J(v, d)$. We focus on the existence problem and determine all possible parameters of such designs for $v \leq 50$. There are some examples with constant weight.
Slides: View slides