THE HIERARCHY AND GRZEGORCZYK'S PROBLEM OF MULTIPLE RECURSIVE FUNCTIONS  

作　　者：郑锡忠 钱磊 

机构地区：[1]Department of Mathematics, Nanjing University, Nanjing 210008, PRC [2]Department of Computer Science and Engineering, Nanjing Aeronautical Institute, Nanjing 210016, PRC

出　　处：《Chinese Science Bulletin》1992年第15期1319-1320,共2页

基　　金：Project supported by the National Natural Science Foundation of China.

摘　　要：A. Grzegorczyk listed in [1] nine important open problems, of which the seventh has been answered positively by R. W. Ritchie. Now, we shall answer negatively the ninth

关 键 词：ANSWER ITERATION Ritchie LISTED operations recursive negatively SCHEMA SUBSET positively 

分 类 号：N[自然科学总论]