Lord, S.Sukochev, F.2010-11-122010-11-122010Symmetry, Integrability and Geometry: Methods and Applications, 2010; 6:1-361815-06591815-0659http://hdl.handle.net/2440/61696The integral in noncommutative geometry (NCG) involves a non-standard trace called a Dixmier trace. The geometric origins of this integral are well known. From a measure-theoretic view, however, the formulation contains several difficulties. We review results concerning the technical features of the integral in NCG and some outstanding problems in this area. The review is aimed for the general user of NCG.enCopyright status unknownDixmier tracesingular tracenoncommutative integrationnoncommutative geometryLebesgue integralnoncommutative residueJournal article002010105410.3842/SIGMA.2010.0720002818247000102-s2.0-8489606021433174Lord, S. [0000-0002-6142-5358]