1. Factorial Supersymmetric Skew Schur Functions and Ninth Variation Determinantal Identities

   • Angèle M. Foley
   • Ronald C. King

   OriginalPaper 16 March 2021 Pages: 229 - 253

2. Duality of Graded Graphs Through Operads

   • Samuele Giraudo

   OriginalPaper 29 March 2021 Pages: 255 - 305

   

3. Noncrossing Arc Diagrams, Tamari Lattices, and Parabolic Quotients of the Symmetric Group

   • Henri Mühle

   OriginalPaper Open access 10 April 2021 Pages: 307 - 344

   

4. Non-crossing Trees, Quadrangular Dissections, Ternary Trees, and Duality-Preserving Bijections

   • Nikos Apostolakis

   OriginalPaper 16 April 2021 Pages: 345 - 392

   

5. Nonrepetitive List Colorings of the Integers

   • Bartłomiej Bosek
   • Jarosław Grytczuk
   • Bartosz Zaleski

   OriginalPaper Open access 24 April 2021 Pages: 393 - 403

6. On Short Expressions for Cosets of Permutation Subgroups

   • Daniele Dona

   OriginalPaper 28 April 2021 Pages: 405 - 437

   

7. Generalization of the Conway–Gordon Theorem and Intrinsic Linking on Complete Graphs

   • Hiroko Morishita
   • Ryo Nikkuni

   OriginalPaper 07 May 2021 Pages: 439 - 470

   

8. Tiling Generating Functions of Halved Hexagons and Quartered Hexagons

   • Tri Lai
   • Ranjan Rohatgi

   OriginalPaper 14 May 2021 Pages: 471 - 493

   

9. On Ovoids of the Generalized Quadrangle \(H(3,q^2)\)

   • Bart De Bruyn

   OriginalPaper 20 May 2021 Pages: 495 - 514

10. Extremal Values of the Sackin Tree Balance Index

    • Mareike Fischer

    OriginalPaper Open access 28 May 2021 Pages: 515 - 541