Solutions to some sign change problems on functions involving sums of divisors

: Ding, Yuchen; Pan, Hao; Sun, Yu-Chen

Publisher: SPRINGER

: NEW YORK

: 2024

: Periodica Mathematica Hungarica

: PERIODICA MATHEMATICA HUNGARICA

: PERIOD MATH HUNG

: 8

: 0031-5303

: 1588-2829

DOI: https://doi.org/10.1007/s10998-024-00620-2

: https://doi.org/10.1007/s10998-024-00620-2

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The first author is supported by the National Natural Science Foundation of China (Grant No. 12201544), the Natural Science Foundation of Jiangsu Province in China (Grant No. BK20210784) and the China Postdoctoral Science Foundation (Grant No. 2022M710121). He is also supported by the foundations (Grant No. JSSCBS20211023).

The second author is supported by the National Natural Science Foundation of China (Grant No. 12071208). The third author was supported by an UTUGS funding and was working in the Academy of Finland project No. 333707. The first named author is supported by National Natural Science Foundation of China (Grant No. 12201544), Natural Science Foundation of Jiangsu Province in China (Grant No. BK20210784) and China Postdoctoral Science Foundation (Grant No. 2022M710121). He is also supported by the foundations (Grant No. JSSCBS20211023). The second named author is supported by the National Natural Science Foundation of China (Grant No. 12071208). The third named author was supported by UTUGS funding and was working in the Academy of Finland project No. 333707.