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Characterizing integers among rational numbers with a universal-existential formula - MaRDI portal

Characterizing integers among rational numbers with a universal-existential formula (Q3638117)

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Characterizing integers among rational numbers with a universal-existential formula
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    Characterizing integers among rational numbers with a universal-existential formula (English)
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    1 July 2009
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    Undecidability
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    Hilbert's Tenth Problem
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    quaternion algebra
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    binary quadratic form
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