نتایج جستجو برای: sigma algebraic map

تعداد نتایج: 271904  

Journal: :Math. Comput. 2009
Robert Osburn Carsten Schneider

Let p be an odd prime. In 1984, Greene introduced the notion of hypergeometric functions over finite fields. Special values of these functions have been of interest as they are related to the number of Fp points on algebraic varieties and to Fourier coefficients of modular forms. In this paper, we explicitly determine these functions modulo higher powers of p and discuss an application to super...

Journal: :Axioms 2022

The topological views of a measure space provide deep insights. In this paper, the sigma-set algebraic structure is extended in Hausdorff based on locally compactable neighborhood systems without considering strictly (metrized) Borel variety. null extension gives rise to quasi sigma-semiring sigma-neighborhoods, which are rectifiable view Dieudonné n-space. concepts symmetric signed measure, un...

Journal: :Annals of Functional Analysis 2022

We study the stability of certain spectra under some algebraic conditions weaker than commutativity and we generalize many known commutative perturbation results. In particular, in a complex unital Banach algebra $$\mathcal {A},$$ prove that if $$x \in \hbox {comm}_{w}(a)$$ is nilpotent, then $$\sigma (x)=\sigma (x+a).$$ Among other things, {comm}(xy)\cup {comm}(yx)$$ or $$y\in for all $$x,y \m...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه خلیج فارس - دانشکده علوم پایه 1392

نظریه اندازه کلاسیک بر مفهوم ‎$sigma$-‎جبری از زیرمجموعه های یک مجموعه بنا شده است. بنیان این اندازه بر خاصیت جمعی شمارش پذیر بودن استوار است. در این پایان نامه مفاهیم مربوط به مجموعه های کلاسیک مانند ‎$sigma$-‎جبر و اندازه را به مجموعه های فازی توسیع می دهیم. در انتقال این مفاهیم از نظریه مجموعه های کلاسیک به مجموعه های فازی باید تعاریف را به نحو مناسبی تعمیم دهیم که در حالت تحدید به مجموعه ها...

Journal: :Combinatorics, Probability & Computing 2009
Guillaume Chapuy

We perform the asymptotic enumeration of two classes of rooted maps on orientable surfaces:m-hypermaps andm-constellations. Form = 2 they correspond respectively to maps with even face degrees and bipartite maps. We obtain explicit asymptotic formulas for the number of such maps with any finite set of allowed face degrees. Our proofs combine a bijective approach, generating series techniques re...

Journal: :Ergodic Theory and Dynamical Systems 2022

Abstract We show that the image of a subshift X under various injective morphisms symbolic algebraic varieties over monoid universes with variety alphabets is finite type, respectively sofic subshift, if and only so . Similarly, let G be countable A , B Artinian modules ring. prove for every closed submodule $\Sigma \subset A^G$ -equivariant uniformly continuous module homomorphism $\tau \colon...

Introduction: Bacteria have at least one sigma factor (σ-factor) that transcribes the genes required for cell viability. Usually, transcription of σ-factors occurs and changes in response to a variety of environmental stresses. Expression of σ-factors is one of the strategies which is used in response to different stress conditions. This study was aimed to evaluate the effects...

2005
Wei-Dong Ruan

In this paper, we study the moment map image of algebraic curves in toric surfaces. We are particularly interested in the situations that we are able to perturb the moment map so that the moment map image of the algebraic curve is a graph. To put our problem into proper context, let’s start with CP. Consider the natural real n-torus (T ) action on CP given by e(x) = (ex1, e x2, · · · , exn). Pa...

Journal: :categories and general algebraic structures with applications 2014
john frith anneliese schauerte

partial frames provide a rich context in which to do pointfree structured and unstructured topology. a small collection of axioms of an elementary nature allows one to do much traditional pointfree topology, both on the level of frames or locales, and that of uniform or metric frames. these axioms are sufficiently general to include as examples bounded distributive lattices, $sigma$-frames, $ka...

2007
Sylvie Ruette

For a continuous map on a topological graph containing a unique loop S it is possible to define the degree and, for a map of degree 1, rotation numbers. It is known that the set of rotation numbers of points in S is a compact interval and for every rational r in this interval there exists a periodic point of rotation number r. The whole rotation set (i.e. the set of all rotation numbers) may no...

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