代数域的可计算范畴及其分裂算法
Computable Categoricity for Algebraic Fields with Splitting Algorithms
摘要:
一个可计算的代数域$F$有一个\emph{splitting algorithm},如果它是可判定的,哪些多项式在$F[X]$是不可约的。我们证明了这样一个域是可计算范畴的当且仅当它是可判定的,其中对元素的$F$属于同一轨道下的自同构。我们还证明了这个准则等价于$F$的相对可计算范畴性。
英文摘要:
A computably presented algebraic field $F$ has a \emph{splitting algorithm} if it is decidable which polynomials in $F[X]$ are irreducible there. We prove that such a field is computably categorical iff it is decidable which pairs of elements of $F$ belong to the same orbit under automorphisms. We also show that this criterion is equivalent to the relative computable categoricity of $F$.
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