2 papers
math.AG2026
Cohomological Hall algebras of one-dimensional sheaves on surfaces and Yangians
Duiliu-Emanuel Diaconescu, Mauro Porta, Francesco Sala +2
This paper provides the first algebraic characterization of an algebra of cohomological Hecke operators associated with modifications of coherent sheaves on a smooth surface al…
math.AG2026
Nilpotent cohomological Hall algebras of surfaces
Duiliu-Emanuel Diaconescu, Mauro Porta, Francesco Sala +2
This paper develops a framework for systematically studying cohomological "Hecke operators" associated with modifications of coherent sheaves on a smooth surface along a fixed…