On the sum of positive divisors functions
DOI10.1007/s40993-021-00240-6zbMath1478.11063OpenAlexW3135937390MaRDI QIDQ2020009
Radek Erban, Robert A. van Gorder
Publication date: 23 April 2021
Published in: Research in Number Theory (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/s40993-021-00240-6
Topological structure of integral curves, singular points, limit cycles of ordinary differential equations (34C05) Initial value problems, existence, uniqueness, continuous dependence and continuation of solutions to ordinary differential equations (34A12) Holomorphic modular forms of integral weight (11F11) Arithmetic functions; related numbers; inversion formulas (11A25) Relations between ergodic theory and number theory (37A44)
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