Abstract A cosmologically viable hypergeometric model within the framework of modified gravity theory f ( R ) has been derived based on requirements asymptotic behavior towards ΛCDM, presence an inflection point in curve, and viability conditions dictated by phase space curves m , r ), where denote characteristic functions model. To examine constraints associated with these criteria, models wer...

In this short note we apply Weyl–De Donder formalism, also known as covariant Hamiltonian for F(R)-gravity. We derive and corresponding equations of motion.