1. Interpretations of the Tutte and characteristic polynomials of matroids

   • Martin Kochol

   OriginalPaper 26 October 2019 Pages: 1 - 9

2. In the shadows of a hypergraph: looking for associated primes of powers of square-free monomial ideals

   • Erin Bela
   • Giuseppe Favacchio
   • Nghia Tran

   OriginalPaper 23 October 2019 Pages: 11 - 29

   

3. Detecting tropical defects of polynomial equations

   • Paul Görlach
   • Yue Ren
   • Jeff Sommars

   OriginalPaper Open access 06 November 2019 Pages: 31 - 47

   

4. The restricted partition lattices

   • István Mező

   OriginalPaper 25 October 2019 Pages: 49 - 58

   

5. Endomorphisms of quadratic forms graph in characteristic two

   • Li-Ping Huang

   OriginalPaper 22 October 2019 Pages: 59 - 79

6. Directed forests and the constancy of Kemeny’s constant

   • Steve Kirkland

   OriginalPaper 02 November 2019 Pages: 81 - 84

7. Ovoids and primitive normal bases for quartic extensions of Galois fields

   • Dirk Hachenberger

   OriginalPaper 06 November 2019 Pages: 85 - 114

8. Complexity of the circulant foliation over a graph

   • Y. S. Kwon
   • A. D. Mednykh
   • I. A. Mednykh

   OriginalPaper 21 February 2020 Pages: 115 - 129

9. On the unique unexpected quartic in \({\mathbb {P}}^2\)

   • Łucja Farnik
   • Francesco Galuppi
   • William Trok

   OriginalPaper Open access 29 November 2019 Pages: 131 - 146

   

10. Properties of tiny braids and the associated commuting graph

    • Azeem Haider
    • Usman Ali
    • Moin A. Ansari

    OriginalPaper 02 December 2019 Pages: 147 - 155

    

11. On a conjecture about an analogue of Tokuyama’s theorem for \(G_2\)

    • Mario DeFranco

    OriginalPaper 28 November 2019 Pages: 157 - 175

    

12. A note on toric degeneration of a Bott–Samelson–Demazure–Hansen variety

    • B. Narasimha Chary

    OriginalPaper 28 November 2019 Pages: 177 - 199

    

13. Signed Mahonian polynomials for major and sorting indices

    • Huilan Chang
    • Sen-Peng Eu
    • Yuan-Hsun Lo

    OriginalPaper 06 December 2019 Pages: 201 - 226

    

14. On the automorphism groups of vertex-transitive Cayley digraphs of monoids

    • Behnam Khosravi
    • Behrooz Khosravi
    • Bahman Khosravi

    OriginalPaper 20 February 2020 Pages: 227 - 251

15. Strongly regular graphs with parameters (81, 30, 9, 12) and a new partial geometry

    • Dean Crnković
    • Andrea Švob
    • Vladimir D. Tonchev

    OriginalPaper 30 January 2021 Pages: 253 - 261