Proximinal subspaces of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="$A(K)$" id="E1"><mml:mi>A</mml:mi><mml:mrow><mml:mo>(</mml:mo><mml:mi>K</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:math>of finite codimension
International journal of mathematics and mathematical sciences