👉 In mathematics, "into" is an infix operator that denotes inclusion or containment. It's used to express that one set, element, or value is a subset of another or falls within a certain range. For example, in set theory, "A ⊆ B" (A into B) means every element of A is also an element of B. In a broader context, "into" can represent various mathematical operations or transformations where one entity is mapped into another, such as in functions (f(x) ⊆ y), where f maps elements from set X into set Y. This operator is fundamental in defining relationships and structures in mathematics, enabling precise expressions of inclusion, containment, and transformation.
