OP-00038 Partially resolved A degree-4 Sum-of-Squares proof that ℂ⁶ has no seven mutually unbiased bases OC · mutually unbiased bases · Randomstrasse101 · semidefinite programming · Sum-of-Squares
OP-00043 Open A degree-4 Sum-of-Squares bound for the Paley clique number OC · clique number · Paley graph · Randomstrasse101 · Sum-of-Squares
OP-00059 Solution claimed Sharp norm bounds for graph matrices PR · graph matrices · matrix chaos · random matrices · Randomstrasse101 · Sum-of-Squares