000 00489nam a2200169Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a510.7
_bOs82
100 _aDigerness Trond
245 _aOn classes of projections in a von-Neumann algebra
260 _aOslo
_bUniversity
_c1971
440 _aOslo University.Institute of Mathematics preprint series : 1971, 15
650 _aMathematics
650 _aNeumann algebra
942 _cBK
999 _c81730
_d81730