  Hom-dendriform algebras are twisted analog of dendriform algebras and are
splitting of hom-associative algebras. In this paper, we define a cohomology
and deformation for hom-dendriform algebras. We relate this cohomology with the
Hochschild-type cohomology of hom-associative algebras. We also describe
similar results for the twisted analog of dendriform coalgebras.
