AIP Conference Proceedings 2159, 030001 (2019); https://doi.org/10.1063/1.5127466 2159, 030001 © 2019 Author(s). A note on the xgamma cumulative sigmoid. Some applications Cite as: AIP Conference Proceedings 2159, 030001 (2019); https://doi.org/10.1063/1.5127466 Published Online: 02 October 2019 Evgenia Angelova, Anna Malinova, Vesselin Kyurkchiev, and Olga Rahneva ARTICLES YOU MAY BE INTERESTED IN Stability and permanent co-existence of a discrete-time two-prey one-predator system with harvesting effort AIP Conference Proceedings 2159, 030002 (2019); https://doi.org/10.1063/1.5127467 Existence theorems for cooperative systems of parabolic PDEs and applications in chemistry AIP Conference Proceedings 2159, 030004 (2019); https://doi.org/10.1063/1.5127469 Pseudodifferential equations in finance AIP Conference Proceedings 2159, 020001 (2019); https://doi.org/10.1063/1.5127463