TY - JOUR T1 - A Note on The Best Approximation in Spaces of Affine Functions TT - JF - lu-maco JO - lu-maco VL - 3 IS - 1 UR - http://maco.lu.ac.ir/article-1-106-en.html Y1 - 2022 SP - 105 EP - 107 KW - Best approximation KW - convex set KW - affine function KW - sandwich theorem. N2 - The proximinality of certain subspaces of spaces of bounded affine functions is proved. The results presented here are some linear versions of an old result due to Mazur. For the proofs we use some sandwich theorems of Fenchel's duality theory. M3 10.52547/maco.3.1.11 ER -