Abstract The quiver Yangians were originally defined for the quiver and superpotential from string theory on general toric Calabi-Yau threefolds. and serve as BPS algebras of these systems. Their characters reproduce the unrefined BPS indices. which are related to classical Donaldson-Thomas (DT) invariants. https://www.markymarkscott.com/product-category/classic-76-clipper-blade/