## Problem 088 — rank:134

**Title:** Collective cytoskeletal force generation

**Added binding assumptions (LaTeX):**

```latex
Specify evolution equations or independently imposed fields for $\rho,p,Q,m$, together with boundary conditions and any elastic internal variables. Force balance plus a stress ansatz alone is not a closed dynamical model. Fix the normalization of the nematic tensor and active-stress sign, and distinguish two-dimensional surface stress from three-dimensional bulk stress in measured traction comparisons.
```

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