**Algebraic Structures - Uni Salzburg**

An algebra (or an algebraic structure) is a set A, the carrier, together with a set of operations on A. In addition, the operations may be required to satisfy a set of equations (identities). Let us take a closer look at nullary operations and clarify the term “constants”. As a matter of convention, A0 is a singleton set, usually denoted as fg. Hence, a nullary operation is a function f ...

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