Source: wikibot/naimark-s-problem
= Naimark's problem
{wiki=Naimark's_problem}
Naimark's problem is a question in the field of functional analysis and operator theory, particularly concerning the representation of positive linear maps on C*-algebras. Formulated by the mathematician Mikhail Naimark, the problem asks whether every positive linear map from a C*-algebra to the space of bounded operators on a Hilbert space can be represented as a completely positive map, which is a stronger condition.