Geodesic
On the strong uniqueness of minimal projections in the space $l_\infty^9$
Vestnik Tverskogo gosudarstvennogo universiteta. Seriâ Prikladnaâ matematika, no. 4 (2020), pp. 28-42

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In this paper we consider minimal projections of the space $l_\infty^9$ on some subspaces of codimension $3$. Relative projection constants are found for them, and in the case of a minimal projection with a unit norm, we find maximum value of the strong uniqueness constant.
Keywords: space, subspace, projection operator, the constant of strong uniqueness.
Mots-clés : relative projection constant 
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     author = {O. M. Martynov},
     title = {On the strong uniqueness of minimal projections in the space $l_\infty^9$},
     journal = {Vestnik Tverskogo gosudarstvennogo universiteta. Seri\^a Prikladna\^a matematika},
     pages = {28--42},
     publisher = {mathdoc},
     number = {4},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTPMK_2020_4_a2/}
}
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O. M. Martynov. On the strong uniqueness of minimal projections in the space $l_\infty^9$. Vestnik Tverskogo gosudarstvennogo universiteta. Seriâ Prikladnaâ matematika, no. 4 (2020), pp. 28-42. http://geodesic.mathdoc.fr/item/VTPMK_2020_4_a2/