Functional decision theory has been developed in many parts through (largely unpublished) dialogue between a number of collaborators. FDT is a generalization of Dai’s (2009) “updateless decision theory” and a successor to the “timeless decision theory” of Yudkowsky (2010). Related ideas have also been proposed in the past by Spohn (2012), Meacham (2010), Gauthier (1994), and others.
Quoting from: https://intelligence.org/files/DeathInDamascus.pdf