00321nam a2200121Ia 45000030006000000080041000060400015000471000034000622450043000962600031001395460012001700050017001820STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aAmerican Mathematical Society  aProceeding of the mathematical society  bMathematical Societyc1967  aEnglish20220125170026.0