000			00307nam a2200133Ia 4500
008			230917s9999||||xx |||||||||||||| ||und||
040			_e91551 _aMAIN
041			_aEnglish
082			_a512.55 S84N
100			_aSatvinder Singh
245		0	_aNumerical ranges of operators
300			_a63 p.
942			_cTH
999			_c49867 _d49867