Available under Creative Commons-ShareAlike 4.0 International License. Download for free at http://cnx.org/contents/383d4b87-2d7b-454e-99fe-2eaa43eae8ff@20.20
One subclass of relations are common enough to merit some special discussion: binary relations. These are relations on pairs, like nhbr.
- 瀏覽次數:1289