In 2014, Chen and Singer solved the summability problem of bivariate rational functions. Later an algorithmic proof was presented by Hou and the author. In this paper, the algorithm will be simplified and adapted to the q-case.

中文翻译：

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二元有理函数的q-可和性问题的算法方法

2014年，Chen和Singer解决了二元有理函数的可加性问题。后来，侯和作者提出了算法证明。在本文中，该算法将被简化并适用于q- case。