Pub Date : 2024-11-22DOI: 10.1016/j.jmaa.2024.129079
Gonzalo Ibañez-Firnkorn, Emanuel Ramadori
In this article, we introduce the fractional maximal operator on the Hyperbolic space, a non-doubling measure space, and study its weighted boundedness. Motivated by the weighted boundedness of the Hardy-Littlewood maximal studied by Antezana and Ombrosi in [1], we give conditions for the weak type and strong type estimate for fractional maximal. Also, we present examples of weights for which the fractional maximal operator satisfies weak type inequality but strong type inequality fails.
{"title":"Fractional maximal operator in hyperbolic spaces","authors":"Gonzalo Ibañez-Firnkorn, Emanuel Ramadori","doi":"10.1016/j.jmaa.2024.129079","DOIUrl":"10.1016/j.jmaa.2024.129079","url":null,"abstract":"<div><div>In this article, we introduce the fractional maximal operator on the Hyperbolic space, a non-doubling measure space, and study its weighted boundedness. Motivated by the weighted boundedness of the Hardy-Littlewood maximal studied by Antezana and Ombrosi in <span><span>[1]</span></span>, we give conditions for the weak type and strong type estimate for fractional maximal. Also, we present examples of weights for which the fractional maximal operator satisfies weak type <span><math><mo>(</mo><mi>p</mi><mo>,</mo><mi>q</mi><mo>)</mo></math></span> inequality but strong type <span><math><mo>(</mo><mi>p</mi><mo>,</mo><mi>q</mi><mo>)</mo></math></span> inequality fails.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 2","pages":"Article 129079"},"PeriodicalIF":1.2,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-22DOI: 10.1016/j.jmaa.2024.129068
Jun Moon
We consider the linear-quadratic stochastic leader-follower Stackelberg differential game for jump-diffusion systems with asymmetric information. In our problem setup, given complete information , leader and follower have access to partial information (filtration) and , respectively, where captures asymmetric information. Our paper can be viewed as an extension of the complete information () in [15] to the problem with partial and asymmetric information. By generalizing the stochastic maximum principles and four-step schemes of [15], we obtain the state-feedback representation of the (open-loop type) Stackelberg equilibrium for the leader and the follower in terms of the coupled integro-type Riccati differential equations and the filtering (state) processes with respect to and . Indeed, due to the partial and asymmetric information nature, we have to identify new types of the four-step schemes and develop different approaches to obtain the (filtering-based) state-feedback type Stackelberg equilibrium.
{"title":"Linear-quadratic stochastic Stackelberg differential games with asymmetric information for systems driven by multi-dimensional jump-diffusion processes","authors":"Jun Moon","doi":"10.1016/j.jmaa.2024.129068","DOIUrl":"10.1016/j.jmaa.2024.129068","url":null,"abstract":"<div><div>We consider the linear-quadratic stochastic leader-follower Stackelberg differential game for jump-diffusion systems with asymmetric information. In our problem setup, given complete information <span><math><mi>F</mi></math></span>, leader and follower have access to partial information (filtration) <span><math><msub><mrow><mi>G</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>⊂</mo><mi>F</mi></math></span> and <span><math><msub><mrow><mi>G</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>⊂</mo><mi>F</mi></math></span>, respectively, where <span><math><msub><mrow><mi>G</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>⊂</mo><msub><mrow><mi>G</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span> captures asymmetric information. Our paper can be viewed as an extension of the complete information (<span><math><msub><mrow><mi>G</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>=</mo><msub><mrow><mi>G</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>=</mo><mi>F</mi></math></span>) in <span><span>[15]</span></span> to the problem with partial and asymmetric information. By generalizing the stochastic maximum principles and four-step schemes of <span><span>[15]</span></span>, we obtain the state-feedback representation of the (open-loop type) Stackelberg equilibrium for the leader and the follower in terms of the coupled integro-type Riccati differential equations and the filtering (state) processes with respect to <span><math><msub><mrow><mi>G</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> and <span><math><msub><mrow><mi>G</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span>. Indeed, due to the partial and asymmetric information nature, we have to identify new types of the four-step schemes and develop different approaches to obtain the (filtering-based) state-feedback type Stackelberg equilibrium.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 2","pages":"Article 129068"},"PeriodicalIF":1.2,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-22DOI: 10.1016/j.jmaa.2024.129077
Juntao Du , Bingyang Hu , Songxiao Li , Xiaojing Zhou
In this paper, we study the boundedness and compactness of the Toeplitz operator for , where the weighted Bergman spaces are induced by (radially) doubling weights in the unit ball of . The equivalence between the boundedness and compactness of is also established under the assumption with . Our work extends the early work of Peláez, Rättyä, and Sierra to higher dimensions, as well as to a larger class of radial weights.
{"title":"Toeplitz operators on Bergman spaces induced by doubling weights in the unit ball of Cn","authors":"Juntao Du , Bingyang Hu , Songxiao Li , Xiaojing Zhou","doi":"10.1016/j.jmaa.2024.129077","DOIUrl":"10.1016/j.jmaa.2024.129077","url":null,"abstract":"<div><div>In this paper, we study the boundedness and compactness of the Toeplitz operator <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>μ</mi></mrow></msub><mo>:</mo><msubsup><mrow><mi>A</mi></mrow><mrow><mi>ω</mi></mrow><mrow><mi>p</mi></mrow></msubsup><mo>↦</mo><msubsup><mrow><mi>A</mi></mrow><mrow><mi>ω</mi></mrow><mrow><mi>q</mi></mrow></msubsup></math></span> for <span><math><mn>1</mn><mo><</mo><mi>p</mi><mo>≤</mo><mi>q</mi></math></span>, where the weighted Bergman spaces <span><math><msubsup><mrow><mi>A</mi></mrow><mrow><mi>ω</mi></mrow><mrow><mi>p</mi></mrow></msubsup></math></span> are induced by (radially) doubling weights in the unit ball of <span><math><msup><mrow><mi>C</mi></mrow><mrow><mi>n</mi></mrow></msup></math></span>. The equivalence between the boundedness and compactness of <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>μ</mi></mrow></msub><mo>:</mo><msubsup><mrow><mi>A</mi></mrow><mrow><mi>ω</mi></mrow><mrow><mi>p</mi></mrow></msubsup><mo>↦</mo><msubsup><mrow><mi>A</mi></mrow><mrow><mi>ω</mi></mrow><mrow><mi>q</mi></mrow></msubsup></math></span> is also established under the assumption with <span><math><mn>1</mn><mo><</mo><mi>q</mi><mo><</mo><mi>p</mi></math></span>. Our work extends the early work of Peláez, Rättyä, and Sierra to higher dimensions, as well as to a larger class of radial weights.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 2","pages":"Article 129077"},"PeriodicalIF":1.2,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-22DOI: 10.1016/j.jmaa.2024.129073
Vicente Ocqueteau , Raúl Gormaz , Jorge San Martín , Carlos Conca
A method based on homogenization is studied for the solution of a multiscale inverse problem. We consider a class of parabolic problems with highly oscillatory tensors that vary on a microscopic scale. We assume that the microscopic structure is known and seek to recover a macroscopic scalar parameterization of the multiscale tensor. Classical approaches, such as finite elements methods, would require mesh resolution for the direct problem down to the finest scale, that could lead to computational difficulties when implemented. So, starting from the full fine scale model, we solve the inverse problem for a coarse model obtained by homogenization, both theoretically and numerically. The input data, which consist on measurements from the fluxes and the solutions of the direct problem in a given time, are solely based on the original fine scale model. Uniqueness and stability of the inverse problem obtained via homogenization are established under some natural conditions for the fine scale model, and a link with this latter model is established by means of G-convergence. Error estimates are proven for the method.
我们研究了一种基于均质化的多尺度逆问题求解方法。我们考虑了一类具有在微观尺度上变化的高度振荡张量的抛物线问题。我们假设微观结构已知,并寻求恢复多尺度张量的宏观标量参数化。有限元法等经典方法需要将直接问题的网格解析到最细微的尺度,这可能会导致实施时的计算困难。因此,我们从完整的精细尺度模型出发,从理论和数值两方面解决了通过均质化获得的粗模型的逆问题。输入数据包括通量的测量值和给定时间内直接问题的解,完全基于原始的精细模型。在精细尺度模型的一些自然条件下,确定了通过均质化获得的逆问题的唯一性和稳定性,并通过 G 收敛建立了与后一模型的联系。证明了该方法的误差估计值。
{"title":"A parabolic multiscale inverse problem approached via homogenization: A numerical method","authors":"Vicente Ocqueteau , Raúl Gormaz , Jorge San Martín , Carlos Conca","doi":"10.1016/j.jmaa.2024.129073","DOIUrl":"10.1016/j.jmaa.2024.129073","url":null,"abstract":"<div><div>A method based on homogenization is studied for the solution of a multiscale inverse problem. We consider a class of parabolic problems with highly oscillatory tensors that vary on a microscopic scale. We assume that the microscopic structure is known and seek to recover a macroscopic scalar parameterization of the multiscale tensor. Classical approaches, such as finite elements methods, would require mesh resolution for the direct problem down to the finest scale, that could lead to computational difficulties when implemented. So, starting from the full fine scale model, we solve the inverse problem for a coarse model obtained by homogenization, both theoretically and numerically. The input data, which consist on measurements from the fluxes and the solutions of the direct problem in a given time, are solely based on the original fine scale model. Uniqueness and stability of the inverse problem obtained via homogenization are established under some natural conditions for the fine scale model, and a link with this latter model is established by means of G-convergence. Error estimates are proven for the method.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 2","pages":"Article 129073"},"PeriodicalIF":1.2,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-20DOI: 10.1016/j.jmaa.2024.129074
Zhang Aiping, Feng Zesheng, Gao Hongya
We establish the local boundedness of vectorial local minimizers for a specific class of integral functionals with rank-one convex integrands under appropriate structural assumptions. Our method adapts the renowned De Giorgi‘s iteration technique and employs a suitable Caccioppoli-type inequality. Our findings are applicable to polyconvex integrals with suitable and .
我们在适当的结构假设下,为一类具有秩一凸积分的特定积分函数建立了向量局部最小值的局部有界性。我们的方法改编了著名的 De Giorgi 迭代技术,并采用了合适的 Caccioppoli 型不等式。我们的发现适用于具有合适的 λ(x),μ(x)>0 和 p,r>1 的多凸积分∫Ω{∑α=1Nλ(x)|Duα|p+μ(x)|Du|r}dx。
{"title":"Local boundedness for vectorial minimizers of non-uniform variational integrals","authors":"Zhang Aiping, Feng Zesheng, Gao Hongya","doi":"10.1016/j.jmaa.2024.129074","DOIUrl":"10.1016/j.jmaa.2024.129074","url":null,"abstract":"<div><div>We establish the local boundedness of vectorial local minimizers for a specific class of integral functionals with rank-one convex integrands under appropriate structural assumptions. Our method adapts the renowned De Giorgi‘s iteration technique and employs a suitable Caccioppoli-type inequality. Our findings are applicable to polyconvex integrals<span><span><span><math><munder><mo>∫</mo><mrow><mi>Ω</mi></mrow></munder><mrow><mo>{</mo><munderover><mo>∑</mo><mrow><mi>α</mi><mo>=</mo><mn>1</mn></mrow><mrow><mi>N</mi></mrow></munderover><mi>λ</mi><mo>(</mo><mi>x</mi><mo>)</mo><mo>|</mo><mi>D</mi><msup><mrow><mi>u</mi></mrow><mrow><mi>α</mi></mrow></msup><msup><mrow><mo>|</mo></mrow><mrow><mi>p</mi></mrow></msup><mo>+</mo><mi>μ</mi><mo>(</mo><mi>x</mi><mo>)</mo><mo>|</mo><mi>D</mi><mi>u</mi><msup><mrow><mo>|</mo></mrow><mrow><mi>r</mi></mrow></msup><mo>}</mo></mrow><mi>d</mi><mi>x</mi></math></span></span></span> with suitable <span><math><mi>λ</mi><mo>(</mo><mi>x</mi><mo>)</mo><mo>,</mo><mi>μ</mi><mo>(</mo><mi>x</mi><mo>)</mo><mo>></mo><mn>0</mn></math></span> and <span><math><mi>p</mi><mo>,</mo><mi>r</mi><mo>></mo><mn>1</mn></math></span>.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 2","pages":"Article 129074"},"PeriodicalIF":1.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-20DOI: 10.1016/j.jmaa.2024.129075
Fei-Ying Yang, Qian Zhao
In this paper, we are concerned with the propagation dynamics of a discrete diffusive Leslie-Gower predator-prey system in shifting habitats. First, we discuss the spreading properties of the corresponding Cauchy problem depending on the range of the shifting speed which is identified respectively by (i) extinction of two species; (ii) only one species surviving; (iii) persistence of two species. Then, we give the existence of two types of forced waves, that is, I type forced waves invading the state where only one species exists in supercritical case and critical case, and II type forced waves invading coexistence state for any speed.
在本文中,我们关注的是一个离散扩散的莱斯利-高尔捕食-猎物系统在移动栖息地中的传播动力学。首先,我们讨论了相应 Cauchy 问题的传播特性,它取决于移动速度的范围,移动速度的范围分别为:(i) 两个物种灭绝;(ii) 只有一个物种存活;(iii) 两个物种持续存在。然后,我们给出了两类强迫波的存在,即在超临界情况和临界情况下入侵只有一种物种存在状态的 I 类强迫波,以及在任意速度下入侵共存状态的 II 类强迫波。
{"title":"Propagation dynamics of the lattice Leslie-Gower predator-prey system in shifting habitats","authors":"Fei-Ying Yang, Qian Zhao","doi":"10.1016/j.jmaa.2024.129075","DOIUrl":"10.1016/j.jmaa.2024.129075","url":null,"abstract":"<div><div>In this paper, we are concerned with the propagation dynamics of a discrete diffusive Leslie-Gower predator-prey system in shifting habitats. First, we discuss the spreading properties of the corresponding Cauchy problem depending on the range of the shifting speed which is identified respectively by (i) extinction of two species; (ii) only one species surviving; (iii) persistence of two species. Then, we give the existence of two types of forced waves, that is, I type forced waves invading the state where only one species exists in supercritical case and critical case, and II type forced waves invading coexistence state for any speed.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 2","pages":"Article 129075"},"PeriodicalIF":1.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-20DOI: 10.1016/j.jmaa.2024.129071
Wei Wang, Xi Zhao, Sining Zheng
<div><div>We study the chemotaxis-Navier-Stokes system modeling coral fertilization<span><span><span>(⋆)</span><span><math><mrow><mrow><mo>{</mo><mtable><mtr><mtd></mtd><mtd><msub><mrow><mi>n</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>+</mo><mi>u</mi><mo>⋅</mo><mi>∇</mi><mi>n</mi><mo>=</mo><mi>Δ</mi><mi>n</mi><mo>−</mo><mi>∇</mi><mo>⋅</mo><mo>(</mo><mi>n</mi><mi>S</mi><mo>(</mo><mi>x</mi><mo>,</mo><mi>n</mi><mo>,</mo><mi>c</mi><mo>)</mo><mi>∇</mi><mi>c</mi><mo>)</mo><mo>−</mo><mi>n</mi><mi>m</mi><mo>,</mo></mtd></mtr><mtr><mtd></mtd><mtd><msub><mrow><mi>c</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>+</mo><mi>u</mi><mo>⋅</mo><mi>∇</mi><mi>c</mi><mo>=</mo><mi>Δ</mi><mi>c</mi><mo>−</mo><mi>c</mi><mo>+</mo><mi>m</mi><mo>,</mo></mtd></mtr><mtr><mtd></mtd><mtd><msub><mrow><mi>m</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>+</mo><mi>u</mi><mo>⋅</mo><mi>∇</mi><mi>m</mi><mo>=</mo><mi>Δ</mi><mi>m</mi><mo>−</mo><mi>n</mi><mi>m</mi><mo>,</mo></mtd></mtr><mtr><mtd></mtd><mtd><msub><mrow><mi>u</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>+</mo><mi>κ</mi><mo>(</mo><mi>u</mi><mo>⋅</mo><mi>∇</mi><mo>)</mo><mi>u</mi><mo>+</mo><mi>∇</mi><mi>P</mi><mo>=</mo><mi>Δ</mi><mi>u</mi><mo>+</mo><mo>(</mo><mi>n</mi><mo>+</mo><mi>m</mi><mo>)</mo><mi>∇</mi><mi>ϕ</mi><mo>,</mo><mspace></mspace><mi>∇</mi><mo>⋅</mo><mi>u</mi><mo>=</mo><mn>0</mn></mtd></mtr></mtable></mrow></mrow></math></span></span></span> in a bounded and smooth domain <span><math><mi>Ω</mi><mo>⊂</mo><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>, where <span><math><mi>κ</mi><mo>≠</mo><mn>0</mn></math></span>, <span><math><mi>ϕ</mi><mo>∈</mo><msup><mrow><mi>W</mi></mrow><mrow><mn>2</mn><mo>,</mo><mo>∞</mo></mrow></msup><mo>(</mo><mi>Ω</mi><mo>)</mo></math></span> and <span><math><mi>S</mi><mo>∈</mo><msup><mrow><mi>C</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>(</mo><mover><mrow><mi>Ω</mi></mrow><mrow><mo>¯</mo></mrow></mover><mo>×</mo><msup><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mo>∞</mo><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msup><mo>;</mo><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn><mo>×</mo><mn>2</mn></mrow></msup><mo>)</mo></math></span> fulfills <span><math><mo>|</mo><mi>S</mi><mo>(</mo><mi>x</mi><mo>,</mo><mi>n</mi><mo>,</mo><mi>c</mi><mo>)</mo><mo>|</mo><mo>≤</mo><msub><mrow><mi>S</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>(</mo><mi>c</mi><mo>)</mo><msup><mrow><mo>(</mo><mn>1</mn><mo>+</mo><mi>n</mi><mo>)</mo></mrow><mrow><mo>−</mo><mi>α</mi></mrow></msup></math></span> for all <span><math><mo>(</mo><mi>x</mi><mo>,</mo><mi>n</mi><mo>,</mo><mi>c</mi><mo>)</mo><mo>∈</mo><mover><mrow><mi>Ω</mi></mrow><mrow><mo>¯</mo></mrow></mover><mo>×</mo><msup><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mo>∞</mo><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msup></math></span> with <span><math><mi>α</mi><mo>∈</mo><mi>R</mi></math></span> and <span><math><msub><mrow><mi>S</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>:</mo><mo>[</mo><mn>0</mn><mo>,</mo><mo>∞</mo><mo>)</mo><mo>→</mo><mo>[</mo><mn>0</
我们研究了模拟珊瑚受精的趋化-纳维尔-斯托克斯系统(⋆){nt+u∇⋅n=Δn-∇⋅(nS(x,n,c)∇c)-nm,ct+u⋅∇c=Δc-c+m、mt+u⋅∇m=Δm-nm,ut+κ(u⋅∇)u+∇P=Δu+(n+m)∇j,∇u⋅u=0,在有界光滑域Ω⊂R2 中,其中κ≠0, ϕ∈W2,∞(Ω) 和 S∈C2(Ω¯×[0,∞)2;R2×2) 满足 |S(x,n,c)|≤S0(c)(1+n)-α for all (x,n,c)∈Ω¯×[0,∞)2 with α∈R and S0:[0,∞)→[0,∞)非递减。在之前的工作 W. Wang 等(2021)[22]中,我们已经证明了如果 n|S| 以-12<α<0超线性增长,则相应的(⋆)初边界值问题具有全局解,但不一定是有界解。在本文中,我们将进一步证实这种全局解一定是全局有界的。
{"title":"Global boundedness in a two-dimensional chemotaxis-Navier-Stokes system modeling coral fertilization","authors":"Wei Wang, Xi Zhao, Sining Zheng","doi":"10.1016/j.jmaa.2024.129071","DOIUrl":"10.1016/j.jmaa.2024.129071","url":null,"abstract":"<div><div>We study the chemotaxis-Navier-Stokes system modeling coral fertilization<span><span><span>(⋆)</span><span><math><mrow><mrow><mo>{</mo><mtable><mtr><mtd></mtd><mtd><msub><mrow><mi>n</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>+</mo><mi>u</mi><mo>⋅</mo><mi>∇</mi><mi>n</mi><mo>=</mo><mi>Δ</mi><mi>n</mi><mo>−</mo><mi>∇</mi><mo>⋅</mo><mo>(</mo><mi>n</mi><mi>S</mi><mo>(</mo><mi>x</mi><mo>,</mo><mi>n</mi><mo>,</mo><mi>c</mi><mo>)</mo><mi>∇</mi><mi>c</mi><mo>)</mo><mo>−</mo><mi>n</mi><mi>m</mi><mo>,</mo></mtd></mtr><mtr><mtd></mtd><mtd><msub><mrow><mi>c</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>+</mo><mi>u</mi><mo>⋅</mo><mi>∇</mi><mi>c</mi><mo>=</mo><mi>Δ</mi><mi>c</mi><mo>−</mo><mi>c</mi><mo>+</mo><mi>m</mi><mo>,</mo></mtd></mtr><mtr><mtd></mtd><mtd><msub><mrow><mi>m</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>+</mo><mi>u</mi><mo>⋅</mo><mi>∇</mi><mi>m</mi><mo>=</mo><mi>Δ</mi><mi>m</mi><mo>−</mo><mi>n</mi><mi>m</mi><mo>,</mo></mtd></mtr><mtr><mtd></mtd><mtd><msub><mrow><mi>u</mi></mrow><mrow><mi>t</mi></mrow></msub><mo>+</mo><mi>κ</mi><mo>(</mo><mi>u</mi><mo>⋅</mo><mi>∇</mi><mo>)</mo><mi>u</mi><mo>+</mo><mi>∇</mi><mi>P</mi><mo>=</mo><mi>Δ</mi><mi>u</mi><mo>+</mo><mo>(</mo><mi>n</mi><mo>+</mo><mi>m</mi><mo>)</mo><mi>∇</mi><mi>ϕ</mi><mo>,</mo><mspace></mspace><mi>∇</mi><mo>⋅</mo><mi>u</mi><mo>=</mo><mn>0</mn></mtd></mtr></mtable></mrow></mrow></math></span></span></span> in a bounded and smooth domain <span><math><mi>Ω</mi><mo>⊂</mo><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>, where <span><math><mi>κ</mi><mo>≠</mo><mn>0</mn></math></span>, <span><math><mi>ϕ</mi><mo>∈</mo><msup><mrow><mi>W</mi></mrow><mrow><mn>2</mn><mo>,</mo><mo>∞</mo></mrow></msup><mo>(</mo><mi>Ω</mi><mo>)</mo></math></span> and <span><math><mi>S</mi><mo>∈</mo><msup><mrow><mi>C</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>(</mo><mover><mrow><mi>Ω</mi></mrow><mrow><mo>¯</mo></mrow></mover><mo>×</mo><msup><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mo>∞</mo><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msup><mo>;</mo><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn><mo>×</mo><mn>2</mn></mrow></msup><mo>)</mo></math></span> fulfills <span><math><mo>|</mo><mi>S</mi><mo>(</mo><mi>x</mi><mo>,</mo><mi>n</mi><mo>,</mo><mi>c</mi><mo>)</mo><mo>|</mo><mo>≤</mo><msub><mrow><mi>S</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>(</mo><mi>c</mi><mo>)</mo><msup><mrow><mo>(</mo><mn>1</mn><mo>+</mo><mi>n</mi><mo>)</mo></mrow><mrow><mo>−</mo><mi>α</mi></mrow></msup></math></span> for all <span><math><mo>(</mo><mi>x</mi><mo>,</mo><mi>n</mi><mo>,</mo><mi>c</mi><mo>)</mo><mo>∈</mo><mover><mrow><mi>Ω</mi></mrow><mrow><mo>¯</mo></mrow></mover><mo>×</mo><msup><mrow><mo>[</mo><mn>0</mn><mo>,</mo><mo>∞</mo><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msup></math></span> with <span><math><mi>α</mi><mo>∈</mo><mi>R</mi></math></span> and <span><math><msub><mrow><mi>S</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>:</mo><mo>[</mo><mn>0</mn><mo>,</mo><mo>∞</mo><mo>)</mo><mo>→</mo><mo>[</mo><mn>0</","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 1","pages":"Article 129071"},"PeriodicalIF":1.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-20DOI: 10.1016/j.jmaa.2024.129069
Mónica Clapp , Víctor Hernández-Santamaría , Alberto Saldaña
We establish the validity of a strong unique continuation property for weakly coupled elliptic systems, including competitive ones. Our proof exploits the system-structure of the problem and Carleman estimates. Then, we use our unique continuation theorems to show two nonexistence results. The first one states the nonexistence of nontrivial solutions to a weakly coupled elliptic system with a critical nonlinearity and Dirichlet boundary condition on starshaped domains, whereas the second one yields nonexistence of symmetric least energy solutions for a critical system in more general domains.
{"title":"A strong unique continuation property for weakly coupled elliptic systems","authors":"Mónica Clapp , Víctor Hernández-Santamaría , Alberto Saldaña","doi":"10.1016/j.jmaa.2024.129069","DOIUrl":"10.1016/j.jmaa.2024.129069","url":null,"abstract":"<div><div>We establish the validity of a strong unique continuation property for weakly coupled elliptic systems, including competitive ones. Our proof exploits the system-structure of the problem and Carleman estimates. Then, we use our unique continuation theorems to show two nonexistence results. The first one states the nonexistence of nontrivial solutions to a weakly coupled elliptic system with a critical nonlinearity and Dirichlet boundary condition on starshaped domains, whereas the second one yields nonexistence of symmetric least energy solutions for a critical system in more general domains.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 2","pages":"Article 129069"},"PeriodicalIF":1.2,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-19DOI: 10.1016/j.jmaa.2024.129066
Jialing Zhang , Xiao Tang , Liu Liu
It is known that topological conjugacy is important in the study of functional equations and dynamical systems, since all functions share topological dynamical properties if they are topologically conjugate. In this paper, the necessary and sufficient conditions of topological conjugacy between two piecewise monotone functions of non-monotonicity height 1, which are decreasing on their characteristic intervals, are given.
{"title":"Conjugacy between piecewise monotone functions decreasing on characteristic interval","authors":"Jialing Zhang , Xiao Tang , Liu Liu","doi":"10.1016/j.jmaa.2024.129066","DOIUrl":"10.1016/j.jmaa.2024.129066","url":null,"abstract":"<div><div>It is known that topological conjugacy is important in the study of functional equations and dynamical systems, since all functions share topological dynamical properties if they are topologically conjugate. In this paper, the necessary and sufficient conditions of topological conjugacy between two piecewise monotone functions of non-monotonicity height 1, which are decreasing on their characteristic intervals, are given.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 1","pages":"Article 129066"},"PeriodicalIF":1.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-19DOI: 10.1016/j.jmaa.2024.129006
Bujar Xh. Fejzullahu
In this paper we consider the bivariate generalized Poisson (G-P) distribution, which is derived from the confluent hypergeometric distribution using the trivariate reduction method. We study some of its important properties such as generating functions, recurrence relations, and differential equations for its probabilities. Furthermore, we show that the certain bivariate G-P distribution is related with the 2D–Hermite type polynomials. As consequence, several formulas for the 2D–Hermite polynomials are obtained.
{"title":"Bivariate generalized Poisson distribution and its relation with 2D–Hermite polynomials","authors":"Bujar Xh. Fejzullahu","doi":"10.1016/j.jmaa.2024.129006","DOIUrl":"10.1016/j.jmaa.2024.129006","url":null,"abstract":"<div><div>In this paper we consider the bivariate generalized Poisson (G-P) distribution, which is derived from the confluent hypergeometric distribution using the trivariate reduction method. We study some of its important properties such as generating functions, recurrence relations, and differential equations for its probabilities. Furthermore, we show that the certain bivariate G-P distribution is related with the 2D–Hermite type polynomials. As consequence, several formulas for the 2D–Hermite polynomials are obtained.</div></div>","PeriodicalId":50147,"journal":{"name":"Journal of Mathematical Analysis and Applications","volume":"544 1","pages":"Article 129006"},"PeriodicalIF":1.2,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}