000 00277nam a2200097Ia 4500
008 230915s9999 xx 000 0 und d
050 _aTHE QA 322.2 .A83 2018
100 _aASAMBA, SAMWEL OKERI
245 0 _aON NUMERICAL RANGES AND SPECTRA OF POSINORMAL OPERATORS
942 _cBK
999 _c203896
_d203896