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Surjection vs Subjection - What's the difference?

surjection | subjection |

As nouns the difference between surjection and subjection

is that surjection is (set theory) a function of "many-to-one" mapping relationship; more formally, f'': ''x'' → ''y'' is a surjection if and only if, for every ''y'' in the codomain ''y'', there is at least one ''x'' in the domain ''x'' with ''f''(''x'') = ''y while subjection is the act of bringing something under the control of something else.

surjection

English

(wikipedia surjection)

Noun

(en noun)
  • (set theory) A function of "many-to-one" mapping relationship; more formally, f'': ''X'' → ''Y'' is a surjection if and only if, for every ''y'' in the codomain ''Y'', there is at least one ''x'' in the domain ''X'' with ''f''(''x'') = ''y .

    • Related terms

    * injection * bijection

    subjection

    English

    Noun

    (en noun)
  • The act of bringing something under the control of something else.
  • The state of being subjected.