4 papers
Arbitrarily large torsion in Khovanov cohomology
Sujoy Mukherjee, Dirk Schuetz
For any positive integer and we construct a link which has a direct summand in its Khovanov cohomology.
On odd torsion in even Khovanov homology
Sujoy Mukherjee
This short note resolves the most important part of the PS braid conjecture while introducing the first known examples of knots and links with odd torsion of order 9, 27, 81, and 2…
Schur Multipliers and Second Quandle Homology
Rhea Palak Bakshi, Dionne Ibarra, Sujoy Mukherjee +2
We define a map from second quandle homology to the Schur multiplier and examine its properties. Furthermore, we express the second homology of Alexander quandles in terms of exter…
On the rack homology of graphic quandles
Sujoy Mukherjee, Józef H. Przytycki
This paper has partially a novel and partially a survey character. We start with a short review of rack (two term) homology of self distributive algebraic structures (shelves) and…