Source: wikibot/donaldson-s-theorem
= Donaldson's theorem
{wiki=Donaldson's_theorem}
Donaldson's theorem is a significant result in differential geometry, particularly in the area of symplectic geometry and the study of 4-manifolds. It was introduced by the mathematician Simon Donaldson in the 1980s and provides conditions under which certain types of smooth manifolds can be classified.