国际统一符号,放心使用,没问题.

　　以下内容引自baidu屏蔽的w开头的某网站（你知道的）：

　　Theintegers(fromtheLatininteger,literally"untouched",hence"whole":thewordentirecomesfromthesameorigin,butviaFrench[1])areformedbythenaturalnumbersincluding0(0,1,2,3,...)togetherwiththenegativesofthenon-zeronaturalnumbers(−1,−2,−3,...).Viewedasasubsetoftherealnumbers,theyarenumbersthatcanbewrittenwithoutafractionalordecimalcomponent,andfallwithintheset{...−2,−1,0,1,2,...}.Forexample,65,7,and−756areintegers;1.6and1½arenotintegers.

　　ThesetofallintegersisoftendenotedbyaboldfaceZ(orblackboardboldmathbb{Z},UnicodeU+2124ℤ),whichstandsforZahlen(Germanfornumbers,pronounced[ˈtsaːlən]).[2]Thesetmathbb{Z}_nisthefinitesetofintegersmodulon(forexample,mathbb{Z}_2={0,1}).