A group is a set \(G\) together with a map \(G\times G\to G\), usually called multiplication and written \((g,h)\mapsto gh\). It satisfies associativity, existence of identity and existence of inverses.
A group is a set \(G\) together with a map \(G\times G\to G\), usually called multiplication and written \((g,h)\mapsto gh\). It satisfies associativity, existence of identity and existence of inverses.