Shorter Notes: Short Proof of Sobczyk's Theorem

William A. Veech
1971 Proceedings of the American Mathematical Society  
A new proof is given of Sobczyk's Theorem, which asserts that Co is complemented in any separable Banach space which contains it (isomorphically) as a closed subspace. Received by the editors July 30, 1970. A MS 1970 subject classifications. Primary 46B99.
doi:10.2307/2038025 fatcat:tffldoh5bvcvjbaaoqwlosj5su