Opuscula Mathematica
Opuscula Math. 32, no. 3 (), 579-590
Opuscula Mathematica

On the uniqueness of minimal projections in Banach spaces

Abstract. Let \(X\) be a uniformly convex Banach space with a continuous semi-inner product. We investigate the relation of orthogonality in \(X\) and generalized projections acting on \(X\). We prove uniqueness of orthogonal and co-orthogonal projections.
Keywords: minimal projection, orthogonal projection, co-orthogonal projection, uniqueness of norm-one projection.
Mathematics Subject Classification: 41A65, 46B20, 46B25.
Cite this article as:
Ewa Szlachtowska, Dominik Mielczarek, On the uniqueness of minimal projections in Banach spaces, Opuscula Math. 32, no. 3 (2012), 579-590, http://dx.doi.org/10.7494/OpMath.2012.32.3.579
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ISSN 1232−9274, e-ISSN 2300−6919, DOI https://doi.org/10.7494/OpMath
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