🌐日本語EnglishDeutschEspañolPortuguês한국어中文日本語EntityQ5870972· pop 6急減少函数Also known as rapidly decreasing functionsmooth function whose absolute value rapidly decreasesAvailable in 6 languagesEspañolDeutsch中文日本語한국어via Wikidata sitelinks · CC0ConnectionsSchwartz spaceEntity