elementary theory | Sciweavers

40

APAL
1999

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On Distinguishing Quotients of Symmetric Groups

14 years 4 days ago

A study is carried out of the elementary theory of quotients of symmetric groups in a similar spirit to [10]. Apart from the trivial and alternating subgroups, the normal subgroup...

Saharon Shelah, J. K. Truss

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35

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JCSS
2007

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Undecidability of the structure of the Solovay degrees of c.e. reals

14 years 11 days ago

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We show that the elementary theory of the structure of the Solovay degrees of computably enumerable reals is undecidable.

Rodney G. Downey, Denis R. Hirschfeldt, Geoffrey L...

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25

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MLQ
2008

63views more MLQ 2008»

Elementary constructive theory of Henselian local rings

14 years 12 days ago

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Abstract. We give an elementary theory of Henselian local rings and construct the Henselization of a local ring. All our theorems have an algorithmic content.

Maria Emilia Alonso, Henri Lombardi, Hervé ...

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