نتایج جستجو برای: نگاشت r theta پیوسته

تعداد نتایج: 472269  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده علوم ریاضی و مهندسی کامپیوتر 1393

فرض کنید c^1[0,1]‎ جبر توابع مشتق پذیر پیوسته از فاصله واحد ‎[0,1] ‎ به توی ‎ c‎ باشد. هدف اصلی این پایان نامه مشخصه سازی نگاشت های دو خطی پیوسته از c^1[0,1]× c^1[0,1]‎ به توی فضای باناخ x ‎ مانند ? است مشروط به این که اگر ‎ f,g?c^1[0,1] ‎ که ‎ fg=0 ‎ آنگاه ? (f,g)=0‎. عملگر خطی ‎ tاز جبر باناخ a ‎ به توی جبر باناخ b‎ را حافظ ضرب صفر گوییم در صورتی که اگر ‎ a,b? a ‎ و ‎ ab=0 ‎ آنگاه ‎ta....

Journal: :Proceedings of the Japan Academy, Series A, Mathematical Sciences 1998

ژورنال: علوم آب و خاک 2014
جعفری, سیروس, خلیلی مقدم, بیژن, قربانی دشتکی, شجاع, مرادی, فرزاد,

Soft computing techniques have been extensively studied and applied in the last three decades for scientific research and engineering computing. The purpose of this study was to investigate the abilities of multilayer perceptron neural network (MLP) and neuro-fuzzy (NF) techniques to estimate the soil-water retention curve (SWRC) from Khozestan sugarcane Agro-Industries data. Sensitivity analysi...

In this paper, we define the almost uniform convergence and the almost everywhere convergence for cone-valued functions with respect to an operator valued measure. We prove the Egoroff theorem for Pvalued functions and operator valued measure θ : R → L(P, Q), where R is a σ-ring of subsets of X≠ ∅, (P, V) is a quasi-full locally convex cone and (Q, W) is a locally ...

Journal: :International Journal of Molecular Sciences 2009
Yufang Liu Yali Gao Hongsheng Zhai Deheng Shi Jinfeng Sun

A new London-Eyring-Polanyi-Sato (LEPS) potential energy surface (PES) is used in the O + CH(4) --> OH + CH(3) reaction via the quasiclassical trajectory method (QCT). Comparing with the experiments and the former ab initio calculations, the new LEPS PES describes the actual potential energy surface of the O + CH(4) reaction successfully. The four polarization dependent "generalized" differenti...

Journal: :Mediterranean Journal of Mathematics 2022

Abstract Given $$E_0, E_1, E, F$$ E 0 , 1 F rearrangement invariant spaces, $$a, \mathrm {b}, {b}_0, {b}_1$$ a b slowly varying functions and $$0\le \theta _0<...

Journal: :Computational Methods and Function Theory 2021

We consider minimal graphs $$u = u(x,y) > 0$$ over unbounded domains $$D \subset R^2$$ bounded by a Jordan arc $$\gamma $$ on which . prove sort of reverse Phragmén-Lindelöf theorem showing that if D contains sector $$\begin{aligned} S_{\lambda }=\{(r,\theta )=\{-\lambda /2<\theta<\lambda /2\},\quad \pi <\lambda \le 2\pi , \end{aligned}$$ then the rate growth is at most $$r^{\pi /\lambda }$$

Journal: :Journal of Mathematical Sciences 2021

We have obtained the exact-order estimates for some approximative characteristics of Sobolev classes $$ {\mathbbm{W}}_{p,\alpha}^r and Nikоl’skii–Besov {\mathbbm{B}}_{p,\theta}^r periodic functions one several variables in norm space B∞,1. Properties linear operators realizing orders best approximation {\mathbbm{B}}_{\infty, \theta}^r this by trigonometric polynomials generated a set harmonics ...

Journal: :Journal of Mathematical Fluid Mechanics 2021

The hydrostatic equilibrium is a prominent topic in fluid dynamics and astrophysics. Understanding the stability of perturbations near Boussinesq systems helps gain insight into certain weather phenomena. 2D system focused here anisotropic involves only horizontal dissipation thermal diffusion. Due to lack vertical dissipation, precise large-time behavior problem difficult. When spatial domain ...

2017
YIXIN BAO

An “automatic continuity” question has naturally occurred since Roger Howe established the local theta correspondence over R: Does the algebraic version of local theta correspondence over R agree with the smooth version? We show that the answer is yes, at least when the concerning dual pair has no quaternionic type I irreducible factor.

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