Issue 82

April 14 - 17, 2019, Hotel Termas da Curia, Curia, Portugal

Preface

[B82a] Loïc Foissy and Frédéric Patras

Surjections as Double Posets (14 pp.)

[B82b] Colin Defant

Stack-Sorting Preimages of Permutation Classes (41 pp.)

[B82c] Markus Kuba and Anna L. Varvak

On Path Diagrams and Stirling Permutations (28 pp.)