On quantum adjacency algebras of Doob graphs and their irreducible modules John Vincent S. MoralesTessie M. Palma OriginalPaper 03 April 2021 Pages: 979 - 998
Designs over regular graphs with least eigenvalue \(-2\) Mohan S. ShrikhandeRajendra M. PawaleAjeet Kumar Yadav OriginalPaper 28 April 2021 Pages: 1021 - 1045
Distance-integral Cayley graphs over abelian groups and dicyclic groups Jing HuangShuchao Li OriginalPaper 30 March 2021 Pages: 1047 - 1063
Toral posets and the binary spectrum property Vincent E. Coll Jr.Nicholas W. Mayers OriginalPaper 10 May 2021 Pages: 1065 - 1093
Consequences of the packing problem Hrishikesh BodasBenjamin DrabkinBrendan Williams OriginalPaper 01 April 2021 Pages: 1095 - 1117
Partial duality for ribbon graphs, III: a Gray code algorithm for enumeration Jonathan L. GrossToufik MansourThomas W. Tucker OriginalPaper 02 April 2021 Pages: 1119 - 1135
The eigenvalues of Hessian matrices of the complete and complete bipartite graphs Akiko Yazawa OriginalPaper 08 April 2021 Pages: 1137 - 1157
Standard monomial theory and toric degenerations of Richardson varieties in the Grassmannian Narasimha Chary BonalaOliver ClarkeFatemeh Mohammadi OriginalPaper 29 April 2021 Pages: 1159 - 1183
\(L^2\)-Betti numbers arising from the lamplighter group Pere AraJoan Claramunt OriginalPaper Open access 21 June 2021 Pages: 1201 - 1245
A note on invariable generation of nonsolvable permutation groups Joachim KönigGicheol Shin OriginalPaper 05 May 2021 Pages: 1247 - 1259
Systems of parameters and the Cohen–Macaulay property Jürgen HerzogSomayeh Moradi OriginalPaper 19 May 2021 Pages: 1261 - 1277
Optimum distance flag codes from spreads via perfect matchings in graphs Clementa Alonso-GonzálezMiguel Ángel Navarro-PérezXaro Soler-Escrivà OriginalPaper Open access 19 November 2021 Pages: 1279 - 1297
On interrelations between strongly, weakly and chord separated set-systems (a geometric approach) Vladimir I. DanilovAlexander V. KarzanovGleb A. Koshevoy OriginalPaper 19 June 2021 Pages: 1299 - 1327