Liouvillian and Analytic Integrability of a Generalized Gause System

TL;DR

This paper investigates the conditions under which a generalized predator-prey system derived from the Gause model is nonintegrable, using complex analysis and algebraic methods, and examines local integrability near equilibrium points.

Contribution

It provides new nonintegrability conditions for a generalized predator-prey model within a complex algebraic framework, extending understanding of its integrability properties.

Findings

Identifies parameter regions where the system is non-Liouvillian integrable.

Establishes nonintegrability of a related Abel differential equation.

Analyzes local analytic integrability near equilibrium points.

Abstract

In this work, we identify the regions of the parameter space in which a predator-prey system, derived from the classical Gause model with a generalized Holling response function and logistic prey growth in the absence of predators, fails to be Liouvillian integrable. Although the model parameters have biological meaning only when restricted to appropriate real domains, our analysis is carried out in the complex setting, which provides a unified algebraic framework; the resulting nonintegrability conditions remain valid in the biologically relevant regime. As a consequence, we establish the nonintegrability of an Abel differential equation of the second kind with polynomial coefficients obtained from the system. Finally, we analyze the existence of a local analytic first integral in neighborhoods of the equilibrium points.