Browsing by Author "Kurik, Kaarel August"

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    Partial result on the plasticity of the unit ball of the l∞-sum of finitely many strictly convex Banach spaces
    (Tartu Ülikool, 2023) Kurik, Kaarel August; Haller, Rainis, juhendaja; Leo, Nikita, juhendaja; Tartu Ülikool. Matemaatika ja statistika instituut; Tartu Ülikool. Loodus- ja täppisteaduste valdkond
    This thesis presents a generalization of a lemma appearing in Nikita Leo’s proof of the plasticity of the closed unit ball of the l∞-sum of two strictly convex Banach spaces. The generalization is then used to show a property related to but weaker than plasticity for the closed unit ball of the l∞-sum of finitely many strictly convex Banach spaces. Two additional results related to the plasticity of closed balls in Banach spaces are also proved.