Hamilton–Jacobi analysis of the Freidel–Starodubtsev BF (A)dS gravity action G. B. de Gracia and B. M. Pimentel Eur. Phys. J. Plus, 135 6 (2020) 470 Published online: 05 June 2020 DOI: 10.1140/epjp/s13360-020-00447-z