edited by Isabel M Araújo (Universidade De Lisboa & Universidade De Evora, Portugal) , Mário J J Branco (Universidade De Lisboa, Portugal) , Vítor H Fernandes (Universidade De Lisboa & Universidade Nova De Lisboa, Portugal) , & Gracinda M S Gomes (Universidade De Lisboa, Portugal)

In recent years, semigroups and languages have seen huge developments and found their motivation in other fields of mathematics as well as in computer science. This book is a collection of original contributions in those fields.

The proceedings have been selected for coverage in:

• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)

• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)

• CC Proceedings — Engineering & Physical Sciences

• The Equational Theory of ??-Terms for Finite P-Trivial Semigroups (J Almeida & M Zeitoun)
• Some Results on Cerný Type Problems for Transformation Semigroups (D S Ananichev & M V Volkov)
• Near Permutation Semigroups (J M André)
• The Origins of Independence Algebras (J Araújo & J Fountain)
• Abelian Kernels, Solvable Monoids and the Abelian Kernel Length of a Finite Monoid (M Delgado & V H Fernandes)
• Braids and Factorizable Inverse Monoids (D Easdown et al.)
• Hyperbolic Groups and Completely Simple Semigroups (J Fountain & M Kambites)
• An Introduction to E^∗-Unitary Inverse Semigroups — From an Old-Fashioned Perspective (D B McAlister)
• Turán's Graph Theorem and Maximum Independent Sets in Brandt Semigroups (J D Mitchell)
• On Semilattices of Archimedean Semigroups — A Survey (M Mitrovic)
• Relative Rewriting Systems (S J Pride & J Wang)
• Inverse Semigroups Acting on Graphs (J Renshaw)
• A Modern Approach to Some Results of Stiffler (B Steinberg)