@article {36752,
	title = {Turnpike in Nonlinear Optimal Control Problems With Indefinite Hamiltonian},
	journal = {IEEE Control Systems Letters},
	volume = {8},
	year = {2024},
	pages = {2691-2696},
	abstract = {We provide a sufficient condition to ensure turnpike for general nonlinear control systems. The main result of this letter exploits the connection between turnpike and the hyperbolicity of the corresponding optimality system and combines it with the theory of Algebraic Riccati Equations with indefinite source terms. We validate our sufficient condition with an example that does not satisfy previous sufficient conditions for turnpike.},
	author = {Yi Lu and Roberto Guglielmi}
}