Select Keyboard:
Türkçe ▾
  1. Türkçe
  2. English
  3. العربية
  4. Dansk
  5. Deutsch
  6. Ελληνικά
  7. Español
  8. فارسی
  9. Français
  10. Italiano
  11. Kurdî
  12. Nederlands
  13. Polski
  14. Português Brasileiro
  15. Português
  16. Русский
  17. Suomi
  18. Svenska
  19. 中文注音符号
  20. 中文仓颉输入法
X
"1234567890*-Bksp
Tabqwertyuıopğü,
CapsasdfghjklşiEnter
Shift<zxcvbnmöç.Shift
AltGr

representable functor

listen to the pronunciation of representable functor
Englisch - Englisch
Given a category C, a covariant representable functor hA sends each object X in category C to C(A,X), the set of arrows from A to X, and sends each arrow f: X → Y to a function from C(A,X) to C(A,Y) which maps each element s of C(A,X) to an element f \circ s of C(A,Y). A contravariant representable functor hA sends each object X in category C to set C(X,A) and each arrow f: X → Y to a function from C(Y,A) to C(X,A) which maps each element s of C(Y,A) to an element s\circ f of C(X,A). Note: hA: C → Sets and hA: Cop → Sets, because hA reverses the direction of the morphisms, whereas hA does not
representable functor
Favoriten