Abilene paradox management expert Jerry B. Harvey in his 1974 article "The Abilene Paradox: The Management of Agreement". The name of the phenomenon comes from an anecdote that Harvey uses in the article to elucidate the paradox: Ronald Sims writes that the Abilene paradox is similar to groupthink, but differs in significant ways, including that in groupthink individuals are not acting contrary to their conscious wishes and generally feel good about the decisions the group has reached. According to Sims, in the Abilene paradox, the individuals acting contrary to their own wishes are more likely to have negative feelings about the outcome.
Automorphism group of a free group and the fourth type to any pair of generators. Nielsen gave a rather complicated finite presentation using these generators, described in . Automorphism group of a free group In mathematical group theory, the automorphism group of a free group is a discrete group of automorphisms of a free group. The quotient by the inner automorphisms is the outer automorphism group of a free group, which is similar in some ways to the mapping class group of a surface. showed that the automorphisms defined by the elementary Nielsen transformations generate the full automorphism group of a finitely generated free group. Nielsen,