@article{jzerounifiedchallengersolverjudgecoevolu,
  title = {J-Zero: Unified Challenger--Solver--Judge Co-Evolution from Zero Data},
  author = {Gyouk Chu and Myeongho Jeon and Eunho Yang},
  year = {2026},
  eprint = {2608.26582},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2608.26582},
}