Affines Gruppenschema/K/Neutrales Element/Diagramm

${\begin{matrix}G&{\stackrel {\operatorname {Id} \times (\epsilon ^{*}\iota ^{*})}{\longrightarrow }}&G\times _{K}G&\\&\!\!\!\!\!\!\!\!\!\!\!\!\!\operatorname {Id} _{G}\searrow &\downarrow \Delta ^{*}\!\!\!\!\!&\\&&\!\!\!\!\!G&\!\!\!\!\!\!\!\!\\\end{matrix}}$