Let F Be a Function from a Set X to a Set

question 19

Essay

Let f be a function from a set X to a set Y. Define precisely (but concisely) what it means for f to be onto.

---

Definitions:

Social Group

A gathering of individuals who connect with each other, share resembling qualities, and jointly hold a feeling of unity or identity.

Gathering

An assembly or meeting of people coming together for a common purpose, often for discussion, celebration, or community activities.

Emergent Norm Theory

Suggests that norms emerge spontaneously in groups during situations where traditional routines or norms are unclear or absent.

Large Crowds

Gatherings of a significant number of people in a specific location, often leading to unique social dynamics and behaviors.