Pattern language recognition and generation pp. 1-38

S. Bozapalidis and A. Kalampakas

Symmetric convex permutominoes and involutions pp. 39-60

F. Disanto and S. Rinaldi

A note on divided ideals pp. 61-64

R. Jahani-Nezhad

Quasi k-ideals in k-regular and intra k-regular semirings pp. 65-74

K. Jana

Pattern avoidance in flattened permutations pp. 75-86

T. Mansour and M. Shattuck