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Creators/Authors contains: "Zhang, Yi"

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  1. Free, publicly-accessible full text available January 6, 2026
  2. Free, publicly-accessible full text available January 6, 2026
  3. Abstract Recently we constructed Mahler discrete residues for rational functions and showed they comprise a complete obstruction to the Mahler summability problem of deciding whether a given rational function $f(x)$ is of the form $$g(x^{p})-g(x)$$ for some rational function $g(x)$ and an integer $p> 1$. Here we develop a notion of $$\lambda $$-twisted Mahler discrete residues for $$\lambda \in \mathbb{Z}$$, and show that they similarly comprise a complete obstruction to the twisted Mahler summability problem of deciding whether a given rational function $f(x)$ is of the form $$p^{\lambda } g(x^{p})-g(x)$$ for some rational function $g(x)$ and an integer $p>1$. We provide some initial applications of twisted Mahler discrete residues to differential creative telescoping problems for Mahler functions and to the differential Galois theory of linear Mahler equations. 
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  4. Free, publicly-accessible full text available January 30, 2026
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  10. Yang, Grace Hui; Wang, Hongning; Han, Sam; Hauff, Claudia; Zuccon, Guido; Zhang, Yi (Ed.)
    Free, publicly-accessible full text available July 10, 2025