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MLQ
1998
13 years 7 months ago
1998
We find properties of topological spaces which are not shared by disjoint unions in the absence of some form of the Axiom of Choice.
MLQ
2007
13 years 7 months ago
2007
Abstract. We prove the existence of pairs of models of the same cardinality λ which are very equivalent according to EF games, but not isomorphic. We continue the paper [4], but w...
MLQ
2006
13 years 7 months ago
2006
We calculate the universal Euler characteristic and universal dimension function on semilinear and semibounded sets and obtain some criteria for definable equivalence of semilinea...
MLQ
2006
13 years 7 months ago
2006
We show that a Woodin cardinal is necessary for the Extender Algebra to be complete. Our proof is relatively simple and does not use fine structure.
MLQ
2000
13 years 7 months ago
2000
We give a corrected proof of an extension of the Robinson Splitting Theorem for the d.c.e. degrees. The purpose of this short paper is to clarify and correct the main result and p...