From 12 to 6: Sharpening the Three-Charge Bound in Maxwell's Problem

A. Gabrielov, Dm. Novikov, T. Novikov, B. Shapiro

For every α>0 and three positive point charges in R^n with n≥2, the potential has at most six nondegenerate equilibria. The new step proves a four-contact statement using separation at the unique saddle of a first integral.

Sources for this record

What was already known

Gabrielov, Novikov and Shapiro had proved an upper bound of 12. Maxwell’s proposed bound of four remains open for three unequal charges.

AI involvement AI-centered

Claude assisted with parts of the new saddle-separation argument. Gabrielov, D. Novikov, T. Novikov and Shapiro developed the final proof and report independently verifying all results.

The disclosed Claude work includes the paper's main new saddle-separation idea, within a human-led proof.

Importance Notable

Halves the previous general three-charge upper bound from 12 to six.

Limitations

This does not reach or refute the bound of four for three unequal charges. Claude’s exact share of the saddle-separation lemma is not specified; symbolic and numerical checks are not documented as exact certificates.

Technical verification Formal (human)

The four authors explicitly report independent verification of all results. Symbolic and numerical checks are also mentioned, but their scope and certificate character are not documented sufficiently to count as machine checking.

Independent checking

Independent author verification of all results

Checker
Gabrielov, D. Novikov, T. Novikov and Shapiro, authors
Scope
Theorem 1.1, at most six nondegenerate equilibria for three positive charges and alpha>0
Basis
Reported by the linked checker
Evidence source

Human understanding Full

The authors explain the separated-variable saddle, four oval contacts and how the earlier Rolle count gives six.

Correction and publication history