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More in “Restriction of graph parameters”

• Does there exist a conference graph for every number of vertices v>1 where v \equiv 1 \bmod 4 and v is an odd sum of two squares?
• Conway's 99-graph problem
• Degree diameter problem
• Jørgensen's conjecture that every 6-vertex-connected K_6-minor-free graph is an apex graph
• Do there exist infinitely many strongly regular geodetic graphs, or any strongly regular geodetic graphs that are not Moore graphs?

Another random mathematics problem →