نتایج جستجو برای: semi-$Pi$-property

تعداد نتایج: 340896  

Journal: :bulletin of the iranian mathematical society 0
a. liu school of applied mathematics‎, ‎chengu information technology‎, ‎chengdu 610225‎, ‎p‎. ‎r‎. ‎china. q. chen college of science‎, ‎hohai university‎, ‎nanjing 210098‎, ‎p‎.‎r‎. ‎china; yancheng institute of technology‎, ‎yancheng 224051‎, ‎p‎.‎r‎. ‎china.

let $g$ be a group and $h$ a subgroup of $g$‎. ‎ $h$ is said to have semi-$pi$-property in $g$ if there is a subgroup $t$ of $g$ such that $g=ht$ and $hcap t$ has $pi$-property in $t$‎. ‎in this paper‎, ‎investigating on semi-$pi$-property of subgroups‎, ‎we shall obtain some new description of finite groups‎.

Let $G$ be a group and $H$ a subgroup of $G$‎. ‎ $H$ is said to have semi-$Pi$-property in $G$ if there is a subgroup $T$ of $G$ such that $G=HT$ and $Hcap T$ has $Pi$-property in $T$‎. ‎In this paper‎, ‎investigating on semi-$Pi$-property of subgroups‎, ‎we shall obtain some new description of finite groups‎.

A module is said to be $PI$-extending provided that every projection invariant submodule is essential in a direct summand of the module. In this paper, we focus on direct summands and indecomposable decompositions of $PI$-extending modules. To this end, we provide several counter examples including the tangent bundles of complex spheres of dimensions bigger than or equal to 5 and certain hyper ...

Journal: :bulletin of the iranian mathematical society 0
y. kara hacettepe university‎, ‎faculty of science‎, ‎department of mathematics‎, ‎06532‎, ‎beytepe‎, ‎ankara‎, ‎turkey. adnan tercan hacettepe university department of mathematics r. yaşar hacettepe university‎, ‎faculty of science‎, ‎department of mathematics‎, ‎06532‎, ‎beytepe‎, ‎ankara‎, ‎turkey.

a module is said to be $pi$-extending provided that every projection invariant submodule is essential in a direct summand of the module. in this paper, we focus on direct summands and indecomposable decompositions of $pi$-extending modules. to this end, we provide several counter examples including the tangent bundles of complex spheres of dimensions bigger than or equal to 5 and certain hyper ...

Journal: :journal of algebra and related topics 0
t. amouzegar quchan university of advanced technology

let $r$ be a ring and $m$ a right $r$-module with $s=end_r(m)$. a module $m$ is called semi-projective if for any epimorphism $f:mrightarrow n$, where $n$ is a submodule of $m$, and for any homomorphism $g: mrightarrow n$, there exists $h:mrightarrow m$ such that $fh=g$. in this paper, we study sgq-projective and$pi$-semi-projective modules as two generalizations of semi-projective modules. a m...

2015
Jacob Fox János Pach Andrew Suk

A k-uniform semi-algebraic hypergraph H is a pair (P,E), where P is a subset of R and E is a collection of k-tuples {p1, . . . , pk} ⊂ P such that (p1, . . . , pk) ∈ E if and only if the kd coordinates of the pi-s satisfy a boolean combination of a finite number of polynomial inequalities. The complexity of H can be measured by the number and the degrees of these inequalities and the number of ...

Journal: :Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas 2020

In this paper we give conditions for a tuple of commutative bounded linear operators which holds in the property of the Hypercyclicity Criterion. We characterize topological transitivity and semi-hereiditarily of a dynamical system given  by an n-tuple of operators acting on a separable infinite dimensional Banach space .

Journal: :Eur. J. Comb. 2004
Murali K. Srinivasan

Let G be a finite group having an order preserving and rank preserving action on a finite ranked poset P. Let P/G denote the quotient poset. A well known result in algebraic Sperner theory asserts that an order raising G-linear map on V (P) (the complex vector space with P as basis) satisfying the full rank property induces an order raising linear map on V (P/G), also satisfying the full rank p...

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