Results 11 to 20 of about 2,928 (263)

On the boundedness of globally F-split varieties

Mathematische Zeitschrift, 2023
AbstractThis paper proposes the use of F-split and globally F-regular conditions in the pursuit of BAB type results in positive characteristic. The main technical work comes in the form of a detailed study of threefold Mori fibre spaces over positive dimensional bases. As a consequence we prove the main theorem, which reduces birational boundedness for
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Global boundedness to a 3D chemotaxis-Stokes system with porous medium cell diffusion and general sensitivity

Advances in Nonlinear Analysis, 2022
In this article, we will develop an analytical approach to construct the global bounded weak solutions to the initial-boundary value problem of a three-dimensional chemotaxis-Stokes system with porous medium cell diffusion Δnm\Delta {n}^{m} for m≥6563m ...
Tian Yu, Xiang Zhaoyin
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Robust Adaptive Tracking Control for Nonlinearly Parameterized High-Order Systems With Unmatched Disturbances

IEEE Access, 2023
The output tracking problem for a class of nonlinearly parameterized high-order uncertain systems with unmatched disturbances is studied. The developed robust adaptive control scheme is based on the combination of a decoupled backstepping control method ...
Yu-Yao Zhai, Shaohua Yang, Zong-Yao Sun
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Logistic damping effect in chemotaxis models with density-suppressed motility

Advances in Nonlinear Analysis, 2022
This paper is concerned with a parabolic-elliptic chemotaxis model with density-suppressed motility and general logistic source in an n-dimensional smooth bounded domain with Neumann boundary conditions.
Lyu Wenbin, Wang Zhi-An
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Global Boundedness for a Delay Differential Equation [PDF]

Transactions of the American Mathematical Society, 1986
The inequality ( ∂ t u − Δ u ) ( t , x ) ≤ u ( t , x ) ( 1 − u ( t − τ , x ) )
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Longterm existence of solutions of a reaction diffusion system with non-local terms modeling an immune response—An interpretation-orientated proof

Partial Differential Equations in Applied Mathematics, 2022
This paper shows the global existence and boundedness of solutions of a reaction diffusion system modeling liver infections. The existence proof is presented step by step and the focus lies on the interpretation of intermediate results in the context of ...
Cordula Reisch, Dirk Langemann
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Dynamic Characteristics of Four Systems of Difference Equations with Higher Order

Advances in Mathematical Physics, 2021
In this paper, we explore the global dynamical characteristics, boundedness, and rate of convergence of certain higher-order discrete systems of difference equations.
Abdul Qadeer Khan, Shahid Mahmood Qureshi, Imtiaz Ahmed   +2 more
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Ultimate Boundedness and Finite Time Stability for a High Dimensional Fractional-Order Lorenz Model

Fractal and Fractional, 2022
In this paper, the global attractive set (GAS) and positive invariant set (PIS) of the five-dimensional Lorenz model with the fractional order derivative are studied.
Min Huang, Shichang Lu, Stanford Shateyi, Hassan Saberi-Nik   +3 more
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Global existence and boundedness of solutions of a certain nonlinear integro-differential equation of second order with multiple deviating arguments

Journal of Inequalities and Applications, 2016
In this paper, we consider the global existence and boundedness of solutions for a certain nonlinear integro-differential equation of second order with multiple constant delays.
Cemil Tunç, Timur Ayhan
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Subadditive periodic functions [PDF]

Opuscula Mathematica, 2011
Some conditions under which any subadditive function is periodic are presented. It is shown that the boundedness from below in a neighborhood of a point of a subadditive periodic (s.p.) function implies its nonnegativity, and the boundedness from above ...
Janusz Matkowski
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