edited by Jorge M André (CAUL & Universidade Nova de Lisboa, Portugal), Vítor H Fernandes (CAUL & Universidade Nova de Lisboa, Portugal), Mário J J Branco (CAUL & Universidade de Lisboa, Portugal), Gracinda M S Gomes (CAUL & Universidade de Lisboa, Portugal), John Fountain (University of York, UK), & John C Meakin (University of Nebraska-Lincoln, USA)

Table of Contents (51k)
Preface (37k)
Chapter 1: A Note on Finitely Generated Semigroups of Regular Languages (248k)

This festschrift volume in honour of Donald B McAlister on the occasion of his 65th birthday presents papers from leading researchers in semigroups and formal languages. The contributors cover a number of areas of current interest: from pseudovarieties and regular languages to ordered groupoids and one-relator groups, and from semigroup algebras to presentations of monoids and transformation semigroups. The papers are accessible to graduate students as well as researchers seeking new directions for future work.

• A Note on Finitely Generated Semigroups of Regular Languages (S Afonin & E Khazova)
• Complete Reducibility of Pseudovarieties (J Almeida et al.)
• Finite Generation of P-Semigroups with Almost G-Invariant Idempotents (C A Carvalho)
• Open Problems on Regular Languages: A Historical Perspective (L Chaubard & J-É Pin)
• Solving Systems of Equations Modulo Pseudovarieties of Abelian Groups and Hyperdecidability (M Delgado et al.)
• Finite Residue Class Rings of Integers Modulo n from the Viewpoint of Global Semigroup Theory (A Egri-Nagy & C L Nehaniv)
• A P-Theorem for Ordered Groupoids (N D Gilbert)
• On the Finite Basis Problem for the Monoids of Extensive Transformations (I A Goldberg)
• A Freiheitssatz for Subsemigroups of One-Relator Groups with Small Cancellation Condition (A Juhász)
• Wreath Product Decompositions for Triangular Matrix Semigroups (M Kambites & B Steinberg)
• In McAlister's Footsteps: A Random Ramble Around the P-Theorem (M V Lawson & S W Margolis)
• On the Structure of the Lattice of Combinatorial Rees–Sushkevich Varieties (E W H Lee & M V Volkov)
• On Trivializers and Subsemigroups (A Malheiro)
• Semilattice Ordered Inverse Semigroups (D B McAlister)
• Isomorphism Problems for Transformation Semigroups (S Mendes-Gonçalves)
• On McAlister's Monoid and Its Contracted Algebra (W D Munn)
• Relative Monoid Presentations and Finite Derivation Type (F Otto)
• Literal Varieties and Pseudovarieties of Homomorphisms onto Abelian Groups (L Polák)
• Factorizability in Certain Classes Over Inverse Semigroups (M B Szendrei)