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Showing 2010 · math.LOShow all
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math.LO2010★ 2 cited
On relationships between algebraic properties of groups and rings in some model-theoretic contexts
Krzysztof Krupinski
We study relationships between certain algebraic properties of groups and rings definable in a first order structure or -closed in a compact -space. As a consequence, we obta…
math.LO2010
Complexity of Ramsey null sets
Marcin Sabok
We show that the set of codes for Ramsey positive analytic sets is -complete. This is a one projective-step higher analogue of the Hurewicz theorem saying that the se…