3 papers
math.RT2026
Critical CoHAs, vertex coalgebras and Deformed Drinfeld coproducts
Shivang Jindal, Sarunas Kaubrys, Alexei Latyntsev
We construct a vertex coproduct on the Kontsevich--Soibelman cohomological Hall algebra (CoHA) of a quiver with potential, following Joyce (2018). We show it forms a vertex bialgeb…
math.AG2025
Exponential map in DT theory
Sarunas Kaubrys
This paper studies the Cohomological Donaldson-Thomas theory of loop stacks of -shifted symplectic stacks. In particular, we compare -shifted tangent stacks of these modul…
math.AG2024
Cohomological Donaldson-Thomas theory for local systems on the -torus
Sarunas Kaubrys
This paper studies the Cohomological Donaldson-Thomas theory of -local systems on the topological three torus. Using an exponential map we prove cohomological integrality for $\…