Commutative Semigroups

Inhaltsverzeichnis

• General structure theory.
• I. Elementary properties.
• II. Cancellative semigroups.
• III. Semilattice decompositions.
• IV. Subdirect decompositions.
• V. Group coextensions.
• VI. Finitely generated semigroups.
• VII. Subcomplete semigroups.
• VIII. Other results.
• Congruences.
• IX. Nilsemigroups.
• X. Group-free semigroups.
• XI. Subcomplete semigroups.
• Cohomology.
• XII. Commutative semigroup cohomology.
• XIII. The overpath method.
• XIV. Semigroups with zero cohomology.
• References.
• Author Index.
• Notation.