On cupping and Ahmad pairs

Working toward showing the decidability of the ∀∃-theory of the Σ0 2-enumeration degrees, we prove that no so-called Ahmad pair of Σ0 2-enumeration degrees can join to 0′e.

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Bibliographic Details
Main Authors: Kalimullin, Iskander Sh., Lempp, Steffen, Ng, Keng Meng, Yamaleev, Mars M.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2023
Subjects:
Online Access:https://hdl.handle.net/10356/171805
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Institution: Nanyang Technological University
Language: English