Sommaire

Preface
The globals of pseudovarieties of ordered semigroups containing B 2 and an application to a problem proposed by Pin
The pseudovariety of semigroups of triangular matrices over a finite field
Hereditary properties of words
Gate circuits in the algebra of transients
On the number of dissimilar pfaffian orientations of graphs
Similarity relations and cover automata
Some decision problems on integer matrices
Finding H-partitions efficiently
The perfection and recognition of bull-reducible Berge graphs
Some decompositions of Bernoulli sets and codes
A sparse dynamic programming algorithm for alignment with non-overlapping inversions
A note on the Size-Ramsey number of long subdivisions of graphs
Episturmian morphisms and a Galois theorem on continued fractions
How expressions can code for automata
Some results on 𝒞-varieties
Parity codes
Krohn-Rhodes complexity pseudovarieties are not finitely based
Imre Simon : an exceptional graduate student
Algebraic and graph-theoretic properties of infinite n-posets