probability-statistics / Probability

Krauth-Mezard Storage Capacity of the Ising Perceptron

Krauth and Mezard predicted in 1989 that the storage capacity of the Ising perceptron at zero margin is an explicit constant $\alpha_\star \approx 0.8330786$. Ding and Sun proved the matching lower bound and Huang the upper bound, but each was conditional on a global sign condition nobody had verified. Both conditions now hold rigorously, so $M_N/N \to \alpha_\star$ in probability with $\alpha_\star \in [0.833078599, 0.833078600]$.

35Significance / 100
1Frontier events
0Verification tasks
0Recorded attempts

Temporal state

Current frontier

No reconciled state yet.

Append-only history

Frontier timeline

Research memory

Claims and attempts

Scoped claims

Source authenticated

Krauth and Mezard predicted in 1989 that the storage capacity of the Ising perceptron at zero margin is an explicit constant $\alpha_\star \approx 0.8330786$. Ding and Sun proved the matching lower bound and Huang the upper bound, but each was conditional on a global sign condition nobody had verified. Both conditions now hold rigorously, so $M_N/N \to \alpha_\star$ in probability with $\alpha_\star \in [0.833078599, 0.833078600]$.

the last conditional step in the Ding-Sun and Huang bounds is discharged

Recorded attempts

Evidence graph

Connected research record

No public relationships recorded yet.