Cyclic covers of affine T-varieties

We consider normal affine T-varieties X endowed with an action of finite abelian group G commuting with the action of T. For such varieties we establish the existence of G-equivariant geometrico-combinatorial presentations in the sense of Altmann and Hausen. As an application, we determine explicit presentations of the Koras-Russell threefolds as hi-cyclic covers of A(3) equipped with a hyperbolic G(m)-action. (C) 2015 Elsevier B.V. All rights reserved.