𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A gap 1 cardinal transfer theorem

✍ Scribed by Luis M. Villegas-Silva


Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
176 KB
Volume
52
Category
Article
ISSN
0044-3050

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

We extend the gap 1 cardinal transfer theorem (ΞΊ ^+^, ΞΊ ) β†’ (Ξ» ^+^, Ξ» ) to any language of cardinality ≀λ, where Ξ» is a regular cardinal. This transfer theorem has been proved by Chang under GCH for countable languages and by Silver in some cases for bigger languages (also under GCH). We assume the existence of a coarse (Ξ», 1)‐morass instead of GCH. (Β© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)


πŸ“œ SIMILAR VOLUMES


A Geometric Proof of the Gap Theorem
✍ David S. Herscovici πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 185 KB

Hollmann, Ko rner, and Litsyn used generalized Steiner systems to prove that it is impossible to partition an n-cube into k Hamming spheres if 2<k<n+2. Furthermore, if k=n+2, they showed the only partition of the n-cube consists of a single sphere of radius n&2 and n+1 spheres of radius 0. We give a

Reductions in Circuit Complexity: An Iso
✍ Manindra Agrawal; Eric Allender; Steven Rudich πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 496 KB

We show that all sets that are complete for NP under nonuniform AC 0 reductions are isomorphic under nonuniform AC 0 -computable isomorphisms. Furthermore, these sets remain NP-complete even under nonuniform NC 0 reductions. More generally, we show two theorems that hold for any complexity class C c

A BasicC1Perturbation Theorem
✍ Lan Wen; Zhihong Xia πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 205 KB
A zero theorem for the transfer of coher
✍ Stefan Gille; Jens Hornbostel πŸ“‚ Article πŸ“… 2005 πŸ› John Wiley and Sons 🌐 English βš– 173 KB

## Abstract Let __R__ be a Gorenstein ring of finite Krull dimension and __t__ ∈ __R__ a regular element. We show that if the quotient map __R__ β†’ __R/Rt__ has a flat splitting then the transfer morphism of coherent Witt groups Tr~(__R/Rt__)/__R__~ : $ \widetilde W^{i} $(__R/Rt__) β†’ $ \widetilde W^

A noncommutative L1-mean ergodic theorem
✍ Charles Radin πŸ“‚ Article πŸ“… 1976 πŸ› Elsevier Science 🌐 English βš– 84 KB

## Notes A Noncommutative L,-Mean Ergodic Theorem We show that operator algebras, as opposed to Banach lattices, provide the more natural structure for &-mean ergodic theory. We will note below how a result in operator algebras yields a significant generalization of the following classical L,-me