libghc-adjunctions-doc 4.2.2-1 (amd64 binary) in ubuntu xenial

 In mathematics, adjoint functors are pairs of functors which stand in a
 particular relationship with one another, called an adjunction.
 .
 This package provides the documentation for a library for the Haskell
 programming language.
 See http://www.haskell.org/ for more information on Haskell.