Hong Kong Document of Identity for Visa Purposes majority are new immigrants from other parts of China to Hong Kong and have been unable to obtain an ordinary Chinese passport), they are not entitled to the consular protection offered by the People's Republic of China government while overseas. However, Chinese foreign missions are able to assist should a Document of Identity become lost or stolen whilst abroad. Hong Kong Document of Identity for Visa Purposes The Hong Kong Special Administrative Region Document of Identity for Visa Purposes () is a biometric travel document issued by the Hong Kong Immigration Department to residents of Hong Kong who are unable
Subdivided interval categories Subdivided interval categories In category theory (mathematics) there exists an important collection of categories denoted formula_1 for natural numbers formula_2. The objects of formula_3 are the integers formula_4, and the morphism set formula_5 for objects formula_6 is empty if formula_7. Subdivided interval categories are very useful in defining simplicial sets. The category whose objects are the subdivided interval categories and whose morphisms are functors is often written formula_8 and is called the simplicial indexing category. A simplicial set is just a contravariant functor formula_9. The category 𝟘 is an empty interval, that is, an empty category, having no objects nor