EntityQ528525· pop 23· linked from 180 articleshomogeneous coordinatesSign in to savemathematicsConnectionsRiemann sphereEntitypoint at infinityEntitymathematicsEntityInternational Standard Book NumberEntitycomplex numberEntityreal numberEntityWayback MachineEntitycoordinate systemEntityEuclidean geometryEntitypolynomialEntitygraphics cardEntityCartesian coordinate systemEntitydeterminantEntitycommutative propertyEntityringEntityfieldEntityUniversity of St AndrewsEntityOpenGLEntityAugust Ferdinand MöbiusEntityscalarEntityCategories1827 in scienceLinear algebraProjective geometry