Almost Koszul algebras and stably Calabi–Yau algebras

We discuss different properties of Frobenius almost Koszul algebras of periodic type. We describe their bimodule projective resolutions and their relations with twisted superpotentials. We give a sufficient condition for a Frobenius almost Koszul algebra of periodic type to be stably Calabi–Yau. We also discuss the stably Calabi–Yau property of skew group algebras.