On the Banach-Mazur Ellipse
DOI :
https://doi.org/10.55630/mem.2026.55.009-018Ключови думи :
разстояние на Банах-Мазур, нормирана равнина, елипса на най- добро приближение, чебишов алтернансАбстракт
Представяме ново доказателство на характеризацията на Адер за елипсата с минимално разстояние на Банах–Мазур до единичната окръжност на нормирана равнина, която характеризация е, че контактните и екстремалните точки имат определено свойство, подобно на алтернанс. Нашият метод явно посочва връзката с чебишовия алтернанс.
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