901 research outputs found

    More about uniform upper Bounds on ideals of Turing degrees

    Get PDF

    Axioms for actuality

    Get PDF

    The composition of Fregean thoughts

    Get PDF

    Cut-conditions on sets of multiple-alternative inferences

    Get PDF
    I prove that the Boolean Prime Ideal Theorem is equivalent, under some weak set-theoretic assumptions, to what I will call the Cut-for-Formulas to Cut-for-Sets Theorem: for a set F and a binary relation |- on Power(F), if |- is finitary, monotonic, and satisfies cut for formulas, then it also satisfies cut for sets. I deduce the CF/CS Theorem from the Ultrafilter Theorem twice; each proof uses a different order-theoretic variant of the Tukey- Teichmüller Lemma. I then discuss relationships between various cut-conditions in the absence of finitariness or of monotonicity

    Uniform Upper Bounds on Ideals of Turing Degrees

    Get PDF

    Well-behaved modal logics

    Get PDF

    On modal logics which enrich first-order S5

    Get PDF
    corecore