no requirements on Swedish language abilities or knowledge about Swedish history or culture - the only other country in Europe without similar requirement is in the Irish nationality law. Citizenship by notification Notification is a simpler method of acquiring Swedish citizenship (i.e. simplified naturalisation). Those not eligible for notification may still be eligible for naturalisation by application. Categories of persons eligible for citizenship by notification include: Stateless persons A stateless person may acquire Swedish citizenship by notification if that person has a permanent resident permit and falls into one of the following categories: born in Sweden and aged less than five; aged under 18 and in the custody of a Swedish citizen; have turned 18 but are under 21 and resident in Sweden since age 15. Young persons resident in Sweden Swedish citizenship may be acquired by notification by young persons who hold a permanent resident permit in the following cases: aged under 18 and resident in Sweden for three years have a permanent residence permit in Sweden, have turned 18 but are under 21, and have been resident in Sweden since turning 13. Former Swedish citizens Former Swedish citizens who hold permanent resident permits may acquire Swedish citizenship by notification if the following conditions are fulfilled: aged 18 or over resident in Sweden for 10 years preceding age 18. resident in Sweden for the 2 years preceding the application Those former Swedish citizens who are citizens of other Nordic countries may acquire Swedish citizenship by notification immediately upon resuming residence in Sweden. Citizens of Nordic countries Citizens of other Nordic Council countries (Denmark, Norway, Iceland and Finland) may be eligible for Swedish citizenship by notification in the following cases: aged 18 or over the other Nordic citizenship has been acquired other than by naturalisation 2 years' residence in Sweden A person who has lived in Sweden for 5 years and who can speak and write Swedish can be qualified to obtain citizenship provided there is no criminal history. Loss of Swedish citizenship Although dual citizenship is permitted, a Swedish citizen who was born outside Sweden and is a citizen of another country will lose Swedish citizenship at age 22 unless he or she is granted approval to retain Swedish citizenship between ages 18–21. However, approval is not required if: the person has ever been domiciled in Sweden; or the person has ever been in Sweden under circumstances that indicate