{
  "sweep": [
    {
      "shape": "g = G0 + G1*y",
      "verdict": "EXCLUDED (det forced to 0 => no Keller map with this g-shape)"
    },
    {
      "shape": "g = G0 + G1*u",
      "verdict": "EXCLUDED (det forced to 0 => no Keller map with this g-shape)"
    },
    {
      "shape": "g = G0 + G1*u*y",
      "verdict": "EXCLUDED (det forced to 0 => no Keller map with this g-shape)"
    },
    {
      "shape": "g = G0 + G1*y^2",
      "verdict": "EXCLUDED (det forced to 0 => no Keller map with this g-shape)"
    },
    {
      "shape": "g = G0 + G1*u^2",
      "verdict": "EXCLUDED (det forced to 0 => no Keller map with this g-shape)"
    }
  ],
  "H_degree": 4,
  "meaning": "generic-coefficient exclusion for the reduction equation, nonconstant g of the listed shapes, deg H <= 4"
}