# [Square-lattice FK interfaces and nested loops for 1 ≤ q < 4](paper.pdf)

**Author:** OpenAI

**Date:** September 23, 2026

## Citation

```bibtex
@misc{OAI:Square-lattice-FK-interfaces-and-nested-loops-for-1-leq-q-lt-4-September-23-2026,
  author = {{OpenAI}},
  title = {{Square-lattice FK interfaces and nested loops for $1\le q<4$}},
  howpublished = {OpenAI Math Release preprint
                  \href{https://github.com/openai/math/blob/main/preprints/Square-lattice-FK-interfaces-and-nested-loops-for-1-leq-q-lt-4-September-23-2026/paper.pdf}{OAI:Square-lattice-FK-interfaces-and-nested-loops-for-1-leq-q-lt-4-September-23-2026}},
  year = {2026}
}
```