YX

yx is a two-letter sequence that does not designate a single, universal concept. Its meaning depends on the domain and context in which it appears. In mathematics and computer science, yx often arises as a symbolic pair of variables or as part of expressions involving the quantities y and x. It can denote the product y times x in an algebraic setting, or serve as a label for a two-dimensional coordinate pair, especially when listing coordinates as y and x instead of the more common x and y order. In programming, yx is frequently used as a variable name or index in loops and array access patterns, and in text processing it can represent the literal characters 'y' and 'x' or a placeholder token in documentation examples.

In linguistics and typography, yx can appear as a digraph or as part of transcription systems, though it does not correspond to a standard symbol with a fixed value across languages. In branding and product naming, YX or yx is used as an identifier in model lines, codes, or initials, often chosen for stylistic reasons rather than to convey a specific technical meaning.

Because there is no single definition, the interpretation of yx hinges on surrounding information: the subject area, notation conventions, and whether capitalization or punctuation alters meaning. See also discussions of X and Y as variables, and the general concept of coordinate notation.