• ℤ is Diophantine in ℚ
• Exponential Time Hypothesis
• Quasi-Riemann Hypothesis
• Kakeya Conjecture in All Dimensions
• Jacobian Conjecture
• Unit Distance Problem
• Hilbert's Tenth Problem
• Unique Games Conjecture
• Navier–Stokes
• Hadamard Matrices
• Non-Sofic Groups
• Subquadratic 3SUM
• All-Pairs Shortest Paths
• Quantum Parallel Repetition
• Multicolor Triangle Ramsey Numbers
• Erdős–Sós Conjecture
• Cycle Double Cover
• Köthe Conjecture
• Sendov's Conjecture
• Crouzeix's Conjecture
• Ehrhart Volume Conjecture
• Borsuk's Conjecture in Dimension 63
• High-Dimensional Sphere Packing
• Multiplying Faster Than n log n
• Connes Rigidity Conjecture
• Nine-Loop Amplitude