Study of equilibrium problem in Hadamard manifolds by extending some concepts of nonlinear analysis

"A modified Halpern extragradient method for equilibrium and fixed point problems in CAT(0) space"

“…Under certain assumption, weak convergence of the sequence {x n } generated by (1.2) to a solution of some equilibrium problem has been established. In recent time, several authors have extended the notion of equilibrium to Hadamard spaces, see for example [8,11,12,25,26].…”