Higher cohomologies of commutative monoids
  Extending Eilenberg-Mac Lane's methods, higher level cohomologies for commutative monoids are introduced and studied. Relationships with pre-existing theories (Leech, Grillet, ...) are stated. The paper includes a cohomological classification for symmetric monoidal groupoids and several computations for cyclic monoids. 
Maria Calvo-Cervera and Antonio M. Cegarra
math.KT math.CT