Cohomology of algebras of semidihedral type, IV

The present paper continues the cycle of papers of the author (some among them – in collaboration), in which the Yoneda algebra are calculated for several families of algebras of dihedral and semidihedral type (in K. Erdmann's classification). In the paper, the Yoneda algebra are described (in terms of quivers with relations) for algebras of semidihedral type, namely of the families $SD(2\mathcal{A})_1$, $SD(2\mathcal{A})_2$ and $SD(3\mathcal{A})_2$.