XRSciences (United States)

The minimal equivariant counterexample to the Jacobian conjecture

Machine-certified classification of C*-equivariant Keller maps on C3. We prove that Alpöge's degree-7 counterexample to the Jacobian conjecture is degree-minimal within its full equivariant class: every C*-equivariant Keller map of total degree at most 6 for weights (−1,1,2) is a...