This project presents a theoretical cyclic cosmological model based on Friedmann equations within General Relativity. The model describes the evolution of a closed universe through four dynamical phases: accelerated expansion, decelerating expansion, accelerated contraction, and final slow contraction toward a high-density state. The framework explores the possibility of a future gravitational recollapse under specific cosmological conditions, including positive spatial curvature and long-term evolution of dark energy behavior. This work is intended as a conceptual and mathematical cosmology framework open to future refinement, parameter analysis, and observational comparison.
Amir malakoti (Thu,) studied this question.