منابع مشابه
Stratification mod n
Recently Zuhair Abdul Ghafoor Al-Johar [12] has directed our attention to a syntactic constraint that is—on the face of it—tighter than NF’s device of stratification; in this little essay I consider a weakening, namely the generalisation of stratification to stratification mod n. So far the coterie of NFistes has considered neither the possibility that the class of unstratified formulæ in the l...
متن کاملPseudofinite counting functions mod n
An Euler characteristic χ is definable if for every definable function f : X → Y and every r ∈ R, the set {y ∈ Y : χ(f−1(y)) = r} is definable. If R = Z/nZ and M is a finite structure, there is a (unique) Euler characteristic χ : Def(M) → Z/nZ assigning every set its size mod n. This χ is always strong and ∅definable. If M is an ultraproduct of finite structures, then there is a canonical stron...
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R units (RVUs) were developed in 1988 as a method of accounting for physicians’ work effort and hospital or clinic expenses. Because RVUs provided a uniform, formulaic metric for myriad clinical services, they quickly became the prevailing method for setting feefor-service payments for Medicare and private insurance. However, the dominance of the fee-forservice model has created strong structur...
متن کاملDIRECTED GRAPHS DEFINED BY ARITHMETIC (MOD n)
Let a and n > 0 be integers, and define G(a, ri) to be the directed graph with vertex set V{0,1,..., n -1} such that there is an arc from x to y if and only if y = ax (mod ri). Recently, Ehrlich [1] studied these graphs in the special case a = 2 and n odd. He proved that if n is odd, then the number of cycles in G(2, ri) is odd or even according as 2 is or is not a quadratic residue mod n. The ...
متن کاملSOME REMARKS CONCERNING MOD-n K-THEORY
The spectral sequence predicted by A. Beilinson relating motivic cohomology to algebraic K-theory has been established for smooth quasi-projective varieties over a field (cf. [FS], [L1]). Among other properties verified, this spectral sequence has the expected multiplicative behavior (involving cup product in motivic cohomology and product in algebraic K-theory) and a good multiplicative “mod-n...
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ژورنال
عنوان ژورنال: Elemente der Mathematik
سال: 2000
ISSN: 0013-6018,1420-8962
DOI: 10.1007/s000170050078