doi:10.1007/s00009-022-02242-9engNavascués, M.A.Verma, S.Non-Stationary a-Fractal SurfacesART-2023-132841In this paper, we define non-stationary fractal interpolation surfaces on a rectangular domain and give some upper bounds for their fractal dimension. Next, we define a fractal operator associated with the non-stationary fractal surfaces, and study some properties of it. In particular, we hint at the existence of a Schauder basis consisting of non-stationary fractal functions.2023http://zaguan.unizar.es/record/12445110.1007/s00009-022-02242-9http://zaguan.unizar.es/record/124451oai:zaguan.unizar.es:124451Mediterranean Journal of Mathematics 20, 1 (2023), 48 [18 pp.]All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess