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Просмотр материалаАвтор: | Karimov, U.H. | Заглавие: | On contractible polyhedra that are not simply contractible | Название издания: | Proceedings of the American Mathematical Society | Год: | 2004 | Номер издания: | Volume 132, Number 7 | Ключевые слова: | absolute retract,
polyhedron,
strong retract,
strict contractibility,
simple contractibility,
collapsibility | Аннотация: | In answer to a question of Michael, Dydak, Segal and Spiez have constructed a contractible polyhedron that is not strictly contractible. In the present note we prove a related result; by using alternative methods we show that there exist contractible polyhedra that are not simply (hence not strictly) contractible. | Язык: | Английский | | | Коллекция: | Статьи |
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