1 Introduction and Summary

2 Quiver BPS Algebras
2.1 Coproducts
2.2 Gradings

3 Toroidal Algebras for Non-Chiral Quivers
3.1 More on Mode Expansions
3.2 Toric Duality
3.3 Higgsing

4 Elliptic Algebras and Chiral Quivers
4.1 Elliptic Algebras for Non-Chiral Quivers
4.2 Comments on Chiral Quivers

5 Discussions