a branch of mathematics that deals with the study of sets, which are collections of distinct objects, and their properties, relationships, and operations
उदाहरण
The empty set, denoted by { }, is a fundamental concept in set theory.
रिक्त समुच्चय, जिसे {} द्वारा दर्शाया जाता है, समुच्चय सिद्धांत में एक मौलिक अवधारणा है।