Maschke定理的一点应用

给出了Maschke定理的两种无限变体,并应用于带子群极小条件的Abel群,深化了Berkovich的有关结果．     

强群分次环中的Mackey分解定理和Maschke定理

本文给出强群分次环中的Mackey分解定理和Maschke定理的一般形式,也给出了A与A_1的Jacobson根之间的一些关系。 本文中模均指右西模,G是有单位元1的群。A是有单位元1的交换环k上的一个有单位元1的结合代数。A称为强G-分次的,如果有k-模直和分解且满足A_gA_h=     

偏π-余模的Maschke型定理

本文研究了偏群余模的Mashcke型定理.利用弱Hopf群余代数推广Hopf代数的方法,获得了偏群余模的Mashcke型定理.推广了Hopf代数理论中的Maschke型定理和[8]的相关结论.     

弱Hopf代数上的Maschke定理和Morita关系

给出了弱Hopf代数上的Maschke定理, 推广了由Cohen和Fishman给出的著名的Maschke定理, 并且在弱Hopf代数上构造了 Morita关系.     

双边弱smash积的Maschke型定理

本文主要给出半单弱Hopf代数上双边弱Smash积的Maschke型定理.     

Hopf代数胚上的Smash积的Maschke型定理和Morita关系

本文研究了Hopf代数胚上的Smash积代数.利用Hopf代数胚的积分理论,获得了Hopf代数胚上的Smash的Maschke型定理并构造了一个Morita关系,推广了Cohen和Fishman在文献[1]中的相应结果.作为应用,获得了Hopf代数胚上的余模代数的Maschke型定理.     

Lie环分解中的Krull—Schmidt定理

该文得到了Lie环分解的Krull-Schmidt定理:若L是在理想上满足极大、极小条件的Lie环,如果L=H1⊕…⊕Hr=K1⊕K2⊕…Ks是L的两个Remak分解,即Hi和Kj是不可分解的,那么r=s,并且存在L的一个中心自同构a,使在适当排列Kj的顺序后,Kai=Ki,进一步地,对任意的k=1,2,…,r,L=K1⊕K2⊕…⊕Kk+1⊕…Hr.如果L=H1⊕…⊕Hr是L的一个Remak分解,那么这个分解是L的唯一Remak分解当且仅当对L的任意正规自同态θ有Hθi≤Hi,i=1,2,…,r.     

不动点型极大极小定理的一点推广

本文通过建立强区间空间概念,拓广了极大极小定理中线性及其它条件,获得了[1]-[5]等文中主要结果的统一形式.     

一个与G—分次环和G—集的Smash积有关的Maschke—Type定理

对任意群Ｇ，〔１〕研究了有单位元１的Ｇ－分次环与有限可迁Ｇ－集的Ｓｍａｓｈ积，在本文中，我们对任意可迁Ｇ－集Ａ讨论了具有局部单元元的Ｇ－分次环与Ｇ－集Ａ的Ｓｍａｓｈ积，证明了有关的一个Ｍａｈｃｈｋｅ－ｔｙｐｅ定理，推广了〔２〕〔３〕中的一些重要结果。     

弱Smash余积的Maschke型定理

In this paper we mainly give Maschke-type theorems for weak smash coproduct coalgebras which simultaneously show how to deal with the complicated computations of weak smash coproduct coalgebras.     

Some New Applications of the Subspace Theorem

We present some applications of the Subspace Theorem to the investigation of the arithmetic of the values of Laurent series f(z) at S-unit points. For instance we prove that if f(q ⁿ ) is an algebraic integer for infinitely many n, then h(f(q ⁿ )) must grow faster than n. By similar principles, we also prove diophantine results about power sums and transcendency results for lacunary series; these include as very special cases classical theorems of Mahler. Our arguments often appear to be independent of previous techniques in the context.     

Some Applications of Gallagher's Theorem in Harmonic Analysis

We present a simple example of an integrable function for whichthe integral is not differentiable almost everywhere in thestrong sense. A first example of such a function was given byS. Saks in 1935. Our construction is considerably more simple,due to the use of a remarkable theorem of P. X. Gallagher.     

A Generalization of Tyuriemskih's Lethargy Theorem and Some Applications

Tyuriemskih's Lethargy Theorem is generalized to provide a useful tool for establishing when a sequence of (not necessarily) linear operators that converges point wise to the identity operator actually converges arbitrarily slowly. Then this generalization is used to answer affirmatively a 2010 conjecture of ours as well as establishing that all of the classical operators of Bernstein, Hermite-Fejer, Landau, Fejer, and Jackson converge arbitrarily slowly to the identity operator (and not just almost arbitrarily slowly as we established in 2010).     

A Theorem for Generalized Extension ofOperators and Some Applications

In this note it is shown that every bounded linear operator T Э B(Y,Z)defined on a closed subspace Y of a Banach space X admits a generalized extension T Э B(X, V). Some examples of the applications are given; especially, a characterization of H.I. spaces is obtained.     

Some Applications of the Ultrapower Theorem to the Theory of Compacta

The ultrapower theorem of Keisler and Shelah allows such model-theoretic notions as elementary equivalence, elementary embedding and existential embedding to be couched in the language of categories (limits, morphism diagrams). This in turn allows analogs of these (and related) notions to be transported into unusual settings, chiefly those of Banach spaces and of compacta. Our interest here is the enrichment of the theory of compacta, especially the theory of continua, brought about by the importation of model-theoretic ideas and techniques.     

Some Applications of the Open Mapping Theorem in Locally Convex Cones

Ukrainian Mathematical Journal - We show that a continuous open linear operator preserves the completeness and barreledness in locally convex cones. Specially, we prove some relations between an...     

Some New Types of KKM Theorem in H spaces with Applications

本文证明了Ｈ－空中的几个新型非空交定理．作为应用,文中得到了向量值极大极小定理和不动点定理,并研究了抽象经济平衡问题．