  We study the holomorphic twist of 3d N = 2 supersymmetric field theories,
discuss the perturbative bulk local operators in general, and explicitly
construct non perturbative bulk local operators for abelian gauge theories. Our
construction is verified by matching the character of the algebra with the
superconformal index. We test a conjectural relation between the derived center
of boundary algebras and bulk algebras in various cases, including
Landau-Ginzburg models with an arbitrary superpotential and some abelian gauge
theories. In the latter cases, monopole operators appear in the derived center
of a perturbative boundary algebra. We briefly discuss the higher structures in
both boundary and bulk algebras.
