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Some Special Pairs of Σ 2 e‐Degrees
Author(s) -
Ahmad Seema,
Lachlan Alistair H.
Publication year - 1998
Publication title -
mathematical logic quarterly
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.473
H-Index - 28
eISSN - 1521-3870
pISSN - 0942-5616
DOI - 10.1002/malq.19980440402
Subject(s) - mathematics
It is shown that there are incomparable Σ 2 e‐degrees a, b such that every e‐degree strictly less than a is also less than b .