SURJECTION

Etymology

Noun

surjection (plural surjections)

(set theory) A function that is a many-to-one mapping; (formally) Any function \(f: X\rightarrow Y\) for which for every \(y \in Y\), there is at least one \(x \in X\) such that \(f(x) = y\).

Synonyms

• (function that is a many-to-one mapping): surjective function

Source: Wiktionary



RESET




Word of the Day

17 May 2025

ANTHOZOAN

(noun) sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed


coffee icon

Coffee Trivia

According to Statista, the global coffee industry is worth US$363 billion in 2020. The market grows annually by 10.6%, and 78% of revenue came from out-of-home establishments like cafes and coffee beverage retailers.

coffee icon