Set

A set can be described as an abstract group or collection of something. It’s a conceptual identity containing either nothing, or a natural number of distinct identities. Could perhaps be thought of as a substantive abstraction layer that is something, in contrast to a mathematical function (which does something). Sets are often formally denoted as a single CAPITAL letter. Sets pertain to set theory and relates to many other fields, including mathematics.

Set Formulas

S = {} (an empty set)

$A = \{n | n \in N \land n < 5\}$ (all natural numbers below 5)

$B = \{m | m = n^2 \forall n \in A\}$ (for all numbers in $A$, square them)