@inproceedings{huichi2016invariant, title={Invariant subsets under compact quantum group actions.}, author={Huichi Huang}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20190822113647534605445}, booktitle={J. Noncommut. Geom.}, volume={10}, number={2}, pages={447-469}, year={2016}, }