Showing math.COShow all
2 papers · 1 filter
math.CO2026
Neumaier graphs of coherent rank five
Gary Greaves, Zhao Kuang Tan
We construct an infinite family of Neumaier graphs of coherent rank five, answering the existence question at the smallest possible coherent rank beyond the strongly regular case.…
math.CO2025
Neumaier graphs from cyclotomy with small coherent rank
Gary R. W. Greaves, Zhao Kuang Tan
Using cyclotomy, we construct a new infinite family of Neumaier graphs that includes infinitely many strongly regular graphs. Notably, this family conjecturally contains infinitely…