PROVIDENCE, Rhode Island, May 6 -- Proceedings of the American Mathematical Society, a peer-reviewed journal that says it features applied mathematics, published research articles on the following topics in its Vol. 152, No. 6 edition:

* Siegel modular forms of degree three and invariants of ternary quartics

* An antichain of monomial ideals in a twisted commutative algebra

* New counterexamples to the birational Torelli theorem for Calabi-Yau manifolds