EntityQ595742· pop 20· linked from 220 articlesMöbius transformationSign in to savefractional linear transformation on the complex projective lineConnectionscross-ratioEntityinversive geometryEntityholomorphic functionEntityrhumb lineEntityisometryEntityRiemann sphereEntitygroup actionEntityLorentz groupEntityhomographyEntityLefschetz fixed-point theoremEntityconformal geometryEntitySL2(R)EntityOne-parameter groupEntitygeneralised circleEntityphysicsEntitygeometryEntityPiConceptNorth PoleConceptInternational Standard Book NumberEntitycomplex numberEntityCategoriesConformal geometryConformal mappingsFunctions and mappingsKleinian groupsLie groupsProjective geometryRiemann surfaces