# nLab Spectrum

$Spectrum$ is the stable (infinity,1)-category of spectra. It is also denoted $Sp$, or sometimes $Spec$ although that can be confusing.

It is the free stable locally presentable (infinity,1)-category on one generator, namely the sphere spectrum.

category: category

Revised on January 8, 2014 09:19:13 by Mike Shulman (108.225.237.253)