Intersection

Representing the concept of overlap, ∩ is known as the intersection symbol. It is often read aloud as "cap" due to its downward-curving shape, which belongs to the Mathematical Operators block. This character is used as a binary operator to define a specific relationship between groups of items, signifying the common elements shared by two distinct sets.

In academic and technical contexts, researchers and students primarily use this symbol in set theory and logic. It frequently appears in formal mathematical proofs to denote the conjunction of sets, as well as in probability theory to represent the joint occurrence of multiple events. Modern programmers and data scientists also utilize the symbol in documentation or specialized mathematical notation when describing database queries and filtering operations where only overlapping data points are required.