000 00331nam a2200121Ia 4500
008 230721s9999||||xx |||||||||||||| ||und||
041 _aeng
082 _a515.724
_bT18 GIL
100 _a Gil, Michael I
245 0 _a Operator functions and operator equations
_c Gil, Michael I
260 _b World Scientific
_c2018
942 _cBK
999 _c18604
_d18604