1x | | momentni problemi, noncommutative polynomials, spectrahedron, operatorske mere, operatorski polinomi, matrični polinomi, Farkaseva lema, realna algebraična geometrija, linear operator inequality, free positivity, kolobarji z involucijo, kvaternionski izrek o ničlah, realni izrek o ničlah, real algebraic geometry, positive polynomials, Positivstellensatz, quadratic module, realna polja |