@article{cohomologicalobstructionstoglobalcounter,
  title = {Cohomological Obstructions to Global Counterfactuals: A Sheaf-Theoretic Foundation for Generative Causal Models},
  author = {Rui Wu and Hong Xie and Yongjun Li},
  year = {2026},
  eprint = {2603.17384},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.17384},
}