Anarres is one of two
planets of
Tau Ceti, in the '
Ekumen' science fiction novels of
Ursula K. Le Guin. It is a double planet settled from
Urras, the original world of the Cetians.The story of Anarres and its settlement by Odonians is told in
The Dispossessed. Cetians appear or are mentioned in various other tales, mostly without specifying which world they come from. But in
The Shobies Story, the Cetian Gveter is an Anarresti. 'Churten theory' was developed on his world, which evidently keeps its Odonian views on cooperation and objects to 'propetarian habits'.
See more at Wikipedia.org...