EntityQ576728· pop 20· linked from 237 articleswinding numberSign in to savenumber of times a curve wraps around a point in the planeConnectionshomotopyEntityintegerEntitycurveEntityCauchy's integral formulaEntitytopological quantum numberEntitydensityEntitymathematicsEntityphysicsEntityCarl Friedrich GaussEntityLeonhard EulerEntityInternational Standard Book NumberEntitycircleEntitycomplex numberEntitymathematical analysisEntityreal numberEntitytopologyEntitypolygonEntityBernhard RiemannEntitypointEntitydigital object identifierEntityCategoriesAlgebraic topologyComplex analysisDifferential geometry