v. 8, n. 39-40

فهرست 39 و 40

39 3 v 1 1 8 Ja n 20 05 Cluster temperatures and non - extensive thermo - statistics Steen

We propose a novel component to the understanding of the temperature structure of galaxy clusters which does not rely on any heating or cooling mechanism. The new ingredient is the use of non-extensive thermo-statistics which is based on the natural generalization of entropy for systems with long-range interactions. Such interactions include gravity and attraction or repulsion due to charges. W...

$n$-cocoherent rings‎, ‎$n$-cosemihereditary rings and $n$-V-rings

 Let $R$ be a ring‎, ‎and let $n‎, ‎d$ be non-negative integers‎. ‎A right $R$-module $M$ is called $(n‎, ‎d)$-projective if $Ext^{d+1}_R(M‎, ‎A)=0$ for every $n$-copresented right $R$-module $A$‎. ‎$R$ is called right $n$-cocoherent if every $n$-copresented right $R$-module is $(n+1)$-coprese-nted‎, ‎it is called a right co-$(n,d)$-ring if every right $R$-module is $(n‎, ‎d)$-projective‎. ‎$R$...

ar X iv : n uc l - th / 0 40 60 39 v 1 1 4 Ju n 20 04 Single j Shell Observations Shadow

In this report we examine two topics relating to previous work. However we feel that there are points to be made which we have not made before. A common thread in the two problems is that they both involve the isospin variable in an important way. In a publication by Devi et. al. [1] we calculated the excitation energies of T=Tmin+1 states in even-odd nuclei and of T=Tmin+2 states of even-even ...

Bruno Caruso - n. 39