@article{efficientapproximationforencoderdecodern,
  title = {Efficient Approximation for Encoder--Decoder Neural Operators via Variation Spaces},
  author = {Jia-Qi Yang and Lei Shi},
  year = {2026},
  eprint = {2606.01244},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.01244},
}