## Problem 128 — rank:143

**Title:** Organ-size stopping rule

**Added binding assumptions (LaTeX):**

```latex
Growth arrest requires an equilibrium of the entire coupled state, not merely zero instantaneous size derivative. Specify the full equilibrium and a local stability criterion, or prove attraction from a declared set of post-resection states when recovery is claimed. Positivity, admissible minimum tissue mass and an independently fixed target size are required. Local linear stability does not imply recovery from arbitrary damage.
```

**Direct edits:** 0. **Fresh external checks:** None; supplied sources retained as provenance.