Editing Quantum chromodynamics (section)

===1/''N'' expansion===
{{main|1/N expansion}}
A well-known approximation scheme, the [[1/N expansion|{{frac|1|''N''}} expansion]], starts from the idea that the number of colors is infinite, and makes a series of corrections to account for the fact that it is not. Until now, it has been the source of qualitative insight rather than a method for quantitative predictions. Modern variants include the [[AdS/CFT]] approach.