4tuppel

4tuppel is a term that can refer to a few different concepts, primarily within the context of programming and data structures. One common usage is a tuple of four elements, often seen in languages that support fixed-size collections of heterogeneous data. These four-element tuples are sometimes referred to as quadruples. They are useful for grouping related pieces of information together, such as coordinates (x, y, z, w), or a key-value pair with an additional identifier.

In some contexts, particularly in the realm of formal languages and theoretical computer science, "4-tuple" might denote an element of a Cartesian product of four sets. This mathematical concept is foundational to defining relations, functions, and other structures. The order of elements within the tuple is significant, meaning (a, b, c, d) is distinct from (b, a, c, d) unless a and b are equal.

The term 4tuppel is not a universally standardized technical term and its precise meaning can depend heavily on the specific programming language, library, or academic field being discussed. However, the core idea consistently revolves around a collection of precisely four ordered items.