{
  "schema": "connectedness-atlas/parameter/v1",
  "label": "The exact real contact interval",
  "parameter": {
    "family": "DD",
    "w": 0.5,
    "rho": 2,
    "alpha": 0,
    "gamma": 0
  },
  "evidence": {
    "kind": "exact-family",
    "description": "The maps are −1+z/2 and 1+z/2. Their attractor is [−2,2]; the first-level pieces meet at 0, and the contact difference contains the marked point 2.",
    "source": "https://complextrees.com/4D/docs/#results",
    "reference": "Exact interval calculation shown above; 19 September working draft, Proposition 3.2 and Appendix A.1"
  },
  "created": "2026-09-19",
  "author": "Bernat Espigulé",
  "notes": "All coefficients here are exact dyadic rationals. This portable mathematical record is separate from UI camera/session schemas."
}