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Partial differential equations

De Giorgi's conjecture in dimension eight

OpenAI research collection · 1 manuscript · Source checked 2026-10-19

OpenAI's result summary

Proves De Giorgi's conjecture at its sharp dimension-eight endpoint: every entire C^(2) solution u:\mathbb R^8→(-1,1) of \Delta u=u^3-u that is strictly increasing in one direction depends on only one linear coordinate. A stronger theorem classifies all stable entire solutions v:\mathbb R^7→[-1,1] as constant wells or planar transitions, without an energy-growth assumption.

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MANUSCRIPT 01

A positive resolution of De Giorgi's conjecture in dimension eight

We resolve De Giorgi's conjecture positively in dimension eight: every entire C^(2) solution u:\mathbb R^8→(-1,1) of \Delta u=u^3-u with an everywhere positive directional derivative is a planar heteroclinic. We prove that every stable solution v:\mathbb R^7→[-1,1] of this equation is a constant well or a planar heteroclinic,…

Full source abstract

We resolve De Giorgi's conjecture positively in dimension eight: every entire C^(2) solution u:\mathbb R^8→(-1,1) of \Delta u=u^3-u with an everywhere positive directional derivative is a planar heteroclinic. We prove that every stable solution v:\mathbb R^7→[-1,1] of this equation is a constant well or a planar heteroclinic, without an energy-growth assumption.

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