1. Linear Extensions and Comparable Pairs in Partial Orders

   • Colin McDiarmid
   • David Penman
   • Vasileios Iliopoulos

   OriginalPaper 14 October 2017 Pages: 403 - 420

2. Uniquely Complemented Posets

   • Ivan Chajda
   • Helmut Länger
   • Jan Paseka

   OriginalPaper Open access 06 November 2017 Pages: 421 - 431

3. Taylor’s Modularity Conjecture and Related Problems for Idempotent Varieties

   • Jakub Opršal

   OriginalPaper 16 November 2017 Pages: 433 - 460

4. Directed Partial Orders on F(i) with 1 > 0

   • Jingjing Ma
   • Liusan Wu
   • Yuehui Zhang

   OriginalPaper 02 November 2017 Pages: 461 - 466

5. The Face Structure and Geometry of Marked Order Polyhedra

   • Christoph Pegel

   OriginalPaper 28 November 2017 Pages: 467 - 488

6. On an Extremal Problem for Poset Dimension

   • Grzegorz Guśpiel
   • Piotr Micek
   • Adam Polak

   OriginalPaper Open access 22 November 2017 Pages: 489 - 493

7. Interval k-Graphs and Orders

   • David E. Brown
   • Breeann M. Flesch
   • Larry J. Langley

   OriginalPaper 17 November 2017 Pages: 495 - 514

8. Homotopy Type of Intervals of the Second Higher Bruhat Orders

   • Thomas McConville

   OriginalPaper 19 December 2017 Pages: 515 - 524

9. Effect Algebras as Presheaves on Finite Boolean Algebras

   • Gejza Jenča

   OriginalPaper 23 December 2017 Pages: 525 - 540

10. Weakly Orthomodular and Dually Weakly Orthomodular Lattices

    • Ivan Chajda
    • Helmut Länger

    OriginalPaper Open access 20 January 2018 Pages: 541 - 555

11. Ramsey Numbers for Partially-Ordered Sets

    • Christopher Cox
    • Derrick Stolee

    OriginalPaper 16 January 2018 Pages: 557 - 579

12. On the 1/3–2/3 Conjecture

    • Emily J. Olson
    • Bruce E. Sagan

    OriginalPaper 23 January 2018 Pages: 581 - 596