For any subset 𝑍 ⊆ ℚ, consider the set 𝑆𝑍 of subfields 𝐿 ⊆ ℚ̄ which contain a co-infinite subset 𝐶 ⊆ 𝐿 that is universally definable in 𝐿 such that 𝐶 ∩ ℚ = 𝑍. Placing a natural topology on ...
This is a preview. Log in through your library . Abstract Let F be a field of characteristic 2 and let K/F be a purely in-separable extension of exponent 1. We determine the kernel W(K/F) of the ...
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