R3R4

R3R4 is a shorthand designation encountered in mathematical and computational contexts. The symbol R is the standard notation for the real numbers, and R^n denotes n-dimensional real Euclidean space. When written as R^3 × R^4 (sometimes seen in plain text as R3R4), the term refers to the Cartesian product of three- and four-dimensional real spaces, yielding a seven-dimensional space used to model objects with seven coordinates or features.

In geometry and physics, R^3 × R^4 appears in discussions of product manifolds and configuration spaces, such as a system with three spatial dimensions plus four additional degrees of freedom (for example, time and other parameters). In data representation, R^3 × R^4 can describe data sets with seven features where the first three correspond to spatial coordinates and the remaining four encode supplementary attributes.

Outside of mathematical notation, R3R4 may be used as an informal label or identifier in software projects, datasets, or documentation, without a universal standardized meaning. When encountered, its interpretation depends on the context, and it should be clarified by accompanying definitions.

See also: Real coordinate space, Euclidean space, Cartesian product, Product space.