TY - JOUR AU - Xu, Yunge AB - In this paper, we investigate the properties of right orthogonal modules of $${{\mathscr {C}}}$$ C , where $${{\mathscr {C}}}$$ C is a class of left R-modules. As an application, we investigate the properties of right orthogonal modules of Ding injective left R-modules, and present various characterizations of semisimple and von Neumann regular rings and so on. Moreover, we also consider another cohomology, strong Tate cohomology, which connects the usual cohomology with the Ding cohomology. TI - On Right Orthogonal Classes and Cohomology Over Ding–Chen Rings JF - Bulletin of the Malaysian Mathematical Sciences Society DO - 10.1007/s40840-017-0461-4 DA - 2017-02-13 UR - https://www.deepdyve.com/lp/springer-journals/on-right-orthogonal-classes-and-cohomology-over-ding-chen-rings-7cgfH8hKen SP - 617 EP - 634 VL - 40 IS - 2 DP - DeepDyve ER -