@inproceedings{grega,
title={A Homological Theory of Functions},
author={Greg Yang},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191221112642738707720},
booktitle={arXiv preprint arXiv:1701.02302},
}

Greg Yang. A Homological Theory of Functions. In arXiv preprint arXiv:1701.02302. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191221112642738707720.