一個超平面將劃分為兩個半空間，半空間是具有以下形式的集合：
 |
半空間是凸的，但不是仿射的。[1]
參考資料
Wikiwand in your browser!
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.
