Class number of (v, n, M)-extensions
نویسندگان
چکیده
منابع مشابه
$(m,n)$-algebraically compactness and $(m,n)$-pure injectivity
In this paper, we introduce the notion of $(m,n)$-algebraically compact modules as an analogue of algebraically compact modules and then we show that $(m,n)$-algebraically compactness and $(m,n)$-pure injectivity for modules coincide. Moreover, further characterizations of a $(m,n)$-pure injective module over a commutative ring are given.
متن کاملRemark on infinite unramified extensions of number fields with class number one
We modify an idea of Maire to construct biquadratic number fields with small root discriminants, class number one, and having an infinite, necessarily non-solvable, strictly unramified Galois extension. Let k be an algebraic number field with class number one. Then k has no Abelian (and hence no solvable) non-trivial unramified Galois extension. It is somewhat surprising that k may nevertheless...
متن کاملd e v e l o p i n g a n i n v e n t o r y m o d e l u n d e r a v e n d o r-m a n a g e d i n v e n t o r y (v m i) p o l i c y w i t h d e f e c t i v e i t e m s a n d p r i c e-d e p e n d e n t d e m a n d
o r g a n i z a t i o n s i n a s u p p l y c h a i n a r e i n d e p e n d e n t e n t i t i e s. a l t h o u g h a c o m p l e t e l y i n t e g r a t e d s o l u t i o n m a y r e s u l t i n o p t i m a l s y s t e m p e r f o r m a n c e, s u p p l y c h a i n m e m b e r s a r e i n t e r e s t e d i n o p t i m i z i n g t h e i r o w n o b j e c t i v e r a t h e r t h a n t h a t o f t...
متن کامل$n$-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. $R$...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of the Australian Mathematical Society
سال: 2001
ISSN: 0004-9727,1755-1633
DOI: 10.1017/s0004972700019080