In mathematics, in the representation theory of algebraic groups, a linear representation of an algebraic group is said to be rational if, viewed as a map from the group to the general linear group, it is a rational map of algebraic varieties.
Finite direct sums and products of rational representations are rational.
A rational module is a module that can be expressed as a sum (not necessarily direct) of rational representations.
- Extensions of Representations of Algebraic Linear Groups
- Springer Online Reference Works: Rational Representation
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