Стійкість безумовних розкладів Шаудера у гільбертових просторах
Abstract
Отримано теорему стійкості для безумовних розкладів Шаудера у гільбертових просторах. Цей результат є узагальненням класичної теореми Т. Като про подібність послідовностей проекторів у гільбертових просторах на випадок безумовних розкладів Шаудера. Також ми уточнюємо одну теорему В.Н. Візітея про стійкість розкладів Шаудера у випадку безумовних розкладів Шаудера.
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