# Definition:R-Algebraic Structure

(Redirected from Definition:R-Action)

Jump to navigation
Jump to search
## Contents

## Definition

Let $\left({R, +_R, \times_R}\right)$ be a ring.

Let $\left({S, \ast_1, \ast_2, \ldots, \ast_n}\right)$ be an algebraic structure with $n$ operations.

Let $\circ: R \times S \to S$ be a binary operation.

Then $\left({S, \ast_1, \ast_2, \ldots, \ast_n, \circ}\right)_R$ is an **$R$-algebraic structure with $n$ operations**.

If the number of operations in $S$ is either understood or general, it is just called an **$R$-algebraic structure**, and the structure can be denoted $\left({S, \circ}\right)_R$.

## Terminology

The operation $\circ$ is also known as an $R$-action by some authors.

## Also see

## Sources

- 1965: Seth Warner:
*Modern Algebra*... (previous) ... (next): $\S 26$