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Isolation and the Jump Operator
Author(s) -
Wu Guohua
Publication year - 2001
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 - 10.1002/1521-3870(200111)47:4<525::aid-malq525>3.0.co;2-7
Subject(s) - mathematics , isolation (microbiology) , jump , operator (biology) , pure mathematics , calculus (dental) , medicine , physics , biology , orthodontics , microbiology and biotechnology , biochemistry , repressor , quantum mechanics , gene , transcription factor
We show the existence of a high d. c. e. degree d and a low 2 c.e. degree a such that d is isolated by a .