2 problems

Chromatic-number conjecture for derived STS of SQS(n), n congruent to 2 modulo 6
Chromatic-number conjecture for derived STS. If
openconstant-weight-codes design-theory steiner-systems
0 responses
03
Nonexistence conjecture for diameter perfect codes in Johnson spaces
Diameter-perfect-code conjecture. There are no nontrivial diameter perfect codes in $J(n,w)$ , except for Steiner systems and their complements.
opencoding-theory constant-weight-codes johnson-schemes
0 responses
04