Separating <em>PH</em> from <em>PP</em> by Relativization<sup>1</sup>

中国科学院数学与系统科学研究院期刊网

Separating PH from PP by Relativization¹

Fu Bin

Acta Mathematica Sinica . 1992, (3): 329 -336 . DOI: 10.1007/BF02582920