نتایج جستجو برای: semigroup of operators

تعداد نتایج: 21176848  

2008
MARÍA MARTELL

We give an overview of the generalized Calderón-Zygmund theory for “non-integral” singular operators, that is, operators without kernels bounds but appropriate off-diagonal estimates. This theory is powerful enough to obtain weighted estimates for such operators and their commutators with BMO functions. L − L off-diagonal estimates when p ≤ q play an important role and we present them. They are...

2008
MARÍA MARTELL

We give an overview of the generalized Calderón-Zygmund theory for “non-integral” singular operators, that is, operators without kernels bounds but appropriate off-diagonal estimates. This theory is powerful enough to obtain weighted estimates for such operators and their commutators with BMO functions. L − L off-diagonal estimates when p ≤ q play an important role and we present them. They are...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1377

در فصل اول مقدمات و پیش نیازهای لازم برای فصل های بعدی فراهم گردیده است . در فصل دوم مساله توسیع مورد توجه قرار گرفته و ابتدا شرایطی که تحت آن از یک فشرده سازی نیم گروهی خاص یک زیرگروه نرمال بسته یک گروه به یک فشرده سازی متناظر با فشرده سازی اولیه برای گروه رسید مورد بررسی قرار گرفته و سپس ارتیاط بین ساختارهای مختلف روی این دو فشرده سازی از جمله ایده آل های مینیمال چپ و راست و... مورد بررسی قرا...

2000
William Arveson WILLIAM ARVESON

Let Pf(x) = −if ′(x) and Qf(x) = xf(x) be the canonical operators acting on an appropriate common dense domain in L2(R). The derivations DP (A) = i(PA−AP ) and DQ(A) = i(QA−AQ) act on the ∗-algebra A of all integral operators having smooth kernels of compact support, for example, and one may consider the noncommutative “Laplacian” L = D2 P + D 2 Q as a linear mapping of A into itself. L generat...

2008
FRANCO FAGNOLA

For a quantum Markov semigroup T on the algebra B(h) with a faithful invariant state ρ, we can define an adjoint T̃ with respect to the scalar product determined by ρ. In this paper, we solve the open problems of characterising adjoints T̃ that are also a quantum Markov semigroup and satisfy the detailed balance condition in terms of the operators H,Lk in the Gorini Kossakowski Sudarshan Lindblad...

Journal: :Kyoto Journal of Mathematics 2021

In this paper, we investigate spectral properties of explosive symmetric Markov processes. Under a condition on its life time, prove the $L^1$-semigroup processes become compact operators.

2016
Abdugeni Osman Abdukerim Haji A. Osman A. Haji

We investigate the solution of an N-unit series system with finite number of vacations. By using CC00-semigroup theory of linear operators, we prove well-posedness and the existence of the unique positive dynamic solution of the system.

Journal: :Journal of Applied Mathematics and Physics 2023

In this work, we prove the existence and uniqueness of solution generalized Schrödinger equation in periodic distributional space P’. Furthermore, that depends continuously respect to initial data Introducing a family weakly continuous operators, is semigroup operators Then, with get fine version dependency theorem obtained. Finally, provide some consequences study.

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