Burak G.Karaca I.2019-10-262019-10-2620171018-63011018-6301https://hdl.handle.net/11454/16231The aim of this paper is to compute a simplicial cohomology group of some specific digital images. Then we define ring and algebra structures of a digital cohomology with the cup product. Finally, we prove a special case of the Borsuk-Ulam theorem for digital images. © 2017 Iranian Mathematical Society.eninfo:eu-repo/semantics/closedAccessCohomology algebraCohomology ringCup productDigital simplicial cohomology groupArticle432477499Q3