Spectrum of a commutative ring
= Spectrum of a commutative ring
{title2=$\operatorname{Spec}A$}
{wiki=Spectrum_of_a_ring}
The spectrum $\operatorname{Spec}A$ of a <commutative ring> $A$ is the set of its <prime ideal>[prime ideals], with closed sets $V(I)=\{\mathfrak p:I\subseteq\mathfrak p\}$ and a structure sheaf whose sections locally look like fractions.
= Spectrum of a ring
{synonym}