## Problem 152 — rank:153

**Title:** Evolution of division of labour

**Added binding assumptions (LaTeX):**

```latex
Specify propagule sampling and transmission of group composition in the next-generation operator; an increase in mean group yield need not increase a rare lineage's invasion fitness. The mutant class and policy complexity are fixed before optimization. A nonpositive maximum invasion exponent establishes the stated non-invasibility only; neutrality and second-order frequency effects require further tests before calling the strategy strictly evolutionarily stable.
```

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