%0 Journal Article %A S. S. Ajiev %T H\"older analysis and geometry on Banach spaces: homogeneous homeomorphisms and commutative group structures, approximation and Tzar’kov’s phenomenon. Part I %J Eurasian mathematical journal %D 2014 %P 7-60 %V 5 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/EMJ_2014_5_1_a0/ %G en %F EMJ_2014_5_1_a0