nth coordinatenth derivativenth factornth iteratenth order differential equationnth partial productnth partial sumnth powernth rootnth root functionnth root of unitynth termnth variationnuclearnuclear classnuclear fissionnuclear operatornuclear reactionnuclear spacenuisance parameternullnull circlenull classnull elementnull eventnull functionnull graphnull groupnull hypothesisnull matrixnull quantifiernull recurrentnull sequencenull setnull setsnull spacenull stringnull treenull vectornullary operationnullitynullity of a linear mappingnullity plus rank theoremnumbernumber axisnumber fieldnumber linenumber of basic feasible solutionsnumber of basisnumber of bounded variables