Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1303-3298-3 |
Объём: | 68 страниц |
Масса: | 123 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
High Quality Content by WIKIPEDIA articles! In mathematics, a topological space is said to be ?-compact if it is the union of countably many compact subspaces. A space is said to be ?-locally compact if it is both ?-compact and locally compact. Every compact space is ?-compact, and every ?-compact space is Lindelof. The reverse implications do not hold, for example, standard Euclidean space is ?-compact but not compact, and the lower limit topology on the real line is Lindelof but not ?-compact. In fact, the countable complement topology is Lindelof but neither ?-compact nor locally compact.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.