Оценки скорости сходимости и погрешности разностных схем решения линейной некорректной задачи Коши второго порядка
Ключевые слова:
некорректная задача Коши
банахово пространство
разностная схема
скорость сходимости
оценка погрешности
операторное исчисление
секториальный оператор
интерполяция банаховых пространств
конечномерная аппроксимация
Аннотация
Изучаются конечно-разностные схемы решения некорректных задач Коши для линейного дифференциально-операторного уравнения второго порядка в банаховом пространстве. Получены равномерные по времени оценки скорости сходимости и погрешности этих схем при наложении на искомое решение условия истокопредставимости. Найдены близкие друг к другу необходимые и достаточные условия в терминах показателя истокопредставимости для сходимости класса схем со степенной скоростью относительно шага дискретизации. Построены и изучены схемы полной дискретизации некорректных задач Коши второго порядка, сочетающие полудискретизацию по времени с дискретной аппроксимацией пространства и оператора.
Раздел
Раздел 1. Вычислительные методы и приложения
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