The unwinding that Cook (J. Symbol. Log. 69(3), 767–774 2004) proposed is a simple but powerful method of generating new paradoxes from known ones. This paper extends Cook's unwinding to a larger ...
Given two structures 𝓜 and 𝓝 on the same domain, we say that 𝓝 is a reduct of 𝓜 if all ∅-definable relations of 𝓝 are ∅-definable in 𝓜. In this article the reducts of the Henson digraphs are ...
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