%0 Journal Article %T A result on invariant approximation %A Abdul Latif %A Arjamand Bano %J Tamkang Journal of Mathematics %D 2002 %I Tamkang University %R 10.5556/j.tkjm.33.2002.79-82 %X In this paper an extension of a theorem of Singh on invariant approximation is given. An interesting corollary for Opial spaces is also derived. %U http://journals.math.tku.edu.tw/index.php/TKJM/article/view/307