@article{Eklof1999ANW,
author={Paul C. Eklof and Saharon Shelah},
journal={Journal of Pure and Applied Algebra},
year={1999},
volume={156},
pages={199-214}
}
• Published 29 August 1999
• Mathematics, Philosophy
• Journal of Pure and Applied Algebra
21 Citations

### The structure of Ext(A, Z) and GCH: possible co-Moore spaces

• Mathematics
• 2002
Abstract. We investigate what ${\rm Ext}(A,\mathbb{Z})$ can be when A is torsion-free and ${\rm Hom}(A,\mathbb{Z})=0$. We thereby give an answer to a question of Golasiński and Gonçalves which asks

### A generalization of the Pontryagin–Hill theorems to projective modules over Prüfer domains

Motivated by the Pontryagin‐Hill criteria of freeness for abelian groups, we investigate conditions under which unions of ascending chains of projective modules are again projective. We prove several

### On the unions of ascending chains of direct sums of ideals of h-local Pr\"{u}fer domains

In this work, we investigate conditions under which unions of ascending chains of modules which are isomorphic to direct sums of ideals of an integral domain are again isomorphic to direct sums of

### LIST OF PUBLICATIONS

1. Sh:a Saharon Shelah. Classification theory and the number of nonisomorphic models, volume 92 of Studies in Logic and the Foundations of Mathematics. North-Holland Publishing Co., Amsterdam-New

### LIST OF PUBLICATIONS

1. Sh:a Saharon Shelah. Classification theory and the number of nonisomorphic models, volume 92 of Studies in Logic and the Foundations of Mathematics. North-Holland Publishing Co., Amsterdam-New

## References

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### On co-Moore spaces

• Mathematics
• 1998
The paper deals with an existence and uniqueness of co-Moore spaces. We show (Theorem 1.2) the uniqueness of a co-Moore space of type A; n for n 3 with given homology groups and deduce that ¢nitely

### Whitehead groups may be not free, even assuming CH, I

AbstractWe prove the consistency with ZFC+G.C.H. of an assertion, which implies several consequences of $$MA + 2^{\aleph _0 } > \aleph _1$$ , which $$\diamondsuit \aleph _1$$ implies their

### Set theory - an introduction to independence proofs

• K. Kunen
• Mathematics
Studies in logic and the foundations of mathematics
• 1983
The Foundations of Set Theory and Infinitary Combinatorics are presented, followed by a discussion of easy Consistency Proofs and Defining Definability.

### The structure

A half-term survey of the applications of organometallic chemistry demonstrating the range of areas where organometallic reactions are important. It builds on the knowledge learned in CHEM 503.

### Whitehead groups may not be free even assuming ch, II

AbstractWe prove some theorems on uncountable abelian groups, and consistency results promised in the first part, and also that a variant of $$\diamondsuit _{\omega _1 }$$ called ♣ (club), is