%0 Journal Article %T Mazur-Ulam Theorem %A Artur Korni owicz %J Formalized Mathematics %@ 1898-9934 %D 2011 %I %R 10.2478/v10037-011-0020-7 %X The Mazur-Ulam theorem [15] has been formulated as two registrations: cluster bijective isometric -> midpoints-preserving Function of E, F; and cluster isometric midpoints-preserving -> Affine Function of E, F; A proof given by Jussi V is l [23] has been formalized. %U http://versita.metapress.com/content/xx00377237379735/?p=402fbc6153ad416ab80168a45b113833&pi=0