left half planeleft handleft hand continuityleft hand coordinate systemleft hand derivativeleft hand jumpleft hand limitleft hand shadow priceleft hand tangentleft hand tangent lineleft handedleft handed coordinate systemleft handed curveleft handed helixleft handed trihedralleft hereditary ringleft idealleft identityleft invariant tensor fieldleft inverseleft inverse elementleft invertibleleft invertible linear transformationleft invertible matrixleft jumpleft k moduleleft limitleft linear grammarleft lower derivativeleft multipleleft multiplesleft multiplicationleft noetherianleft open intervalleft quasicontinuityleft quotient spaceleft r moduleleft ringleft semihereditary ringleft shiftleft simplifiable elementleft singulos vectorleft subtreeleft successorleft tangentleft topologyleft upper derivativeleft vector spaceleftchildlefthand die
