indexstel
Indexstel is a term used primarily in mathematics and computer science to describe a set of indices that label elements within a larger structure such as a sequence, array, matrix, or tensor. The concept is fundamental to the formal description of indexed families, allowing precise reference to each component of a structure.
In set theory, an indexstel I is a nonempty collection of objects that serve as labels. An
In computer science, indexstels underpin data structures such as arrays and matrices. When programming languages refer
The usage of indexstels is common in proofs that involve permutation of elements, summation over multiple indices,
Historically, the adoption of explicit indexstels dates back to the early 20th century, with the formalization