具有渐近3-线性非线性项的Kirchhoff方程解的存在性(英文)

本文首先介绍了Kirchhoff方程物理背景及其应用,并且介绍了用变分方法研究Kirchhoff方程得到的已有成果,指出渐近3-线性的非线性项的Kirchhoff方程还没有人研究.最后利用临界点理论中的山路引理证明了具有在原点和无穷原点都渐近3-线性的一般非线性项的Kirchhoff方程解的存在性结果.     

拟线性Kirchhoff型问题解的存在性

讨论了一类p阶Kirchhoff Neumann边界条件问题非平凡解的存在性.当非线性项满足非线性边界条件以及临界条件时,利用山路引理和集中紧性原理,得到了该方程的一个非平凡解.     

一类Kirchhoff型方程解的多重性

考虑一类Kirchhoff型方程解的多重性, 利用非线性项在无穷远处与零点处的渐近行为及Ekeland变分原理和山路定理得到了所考虑方程的两个正解和两个负解.     

具有电磁场和临界Hardy-Littlewood-Sobolev项的非线性Kirchhoff方程的多解性

首先,用分数阶集中紧性原理,在全空间上证明一类带有电磁场和临界Hardy-Littlewood-Sobolev项的非线性Kirchhoff方程的紧性条件,以克服该方程由于无界区域以及临界项导致的紧性条件缺失问题;其次结合对称山路定理,证明该方程满足山路结构,并结合亏格理论证明该方程解的多重性.     

一类拟线性椭圆系统非平凡解的多重性

利用Ekeland's变分原理和山路引理,获得一类具有凹凸非线性项和变号位势的椭圆系统至少2个非平凡非负解的存在性.     

全空间上具有临界指数的Kirchhoff类方程两个正解的存在性

本文在参数的不同范围及给定假设下利用Ekeland变分原理、山路引理、集中紧性原理和一些分析技巧得到了全空间上具有临界指数的非线性项和非齐次扰动项的Kirchhoff类方程两个正解的存在性.     

分数阶Schr?dinger-Kirchhoff型方程无穷多解的存在性

研究了包含分数阶p-拉普拉斯算子和凹凸非线性项的Schr?dinger-Kirchhoff型方程.在对方程中的位势函数作适当假设下,运用山路定理、喷泉定理和Clark定理,证明了上述方程正解的存在性,并进一步证明了方程存在无穷多个非平凡解.     

非局部问题在第二边界条件下解的存在性

运用变分方法和山路引理研究一类含临界项的Kirchhoff型方程在Neumann边界条件下解的存在性.首先,通过方程对应的能量泛函及解的定义获得平凡解的等价条件;其次,考虑Kirchhoff方程的特征问题,并利用反证法与Brezis-Lieb's引理证明能量泛函满足PS条件;最后,根据山路引理得到泛函的临界值,然而其临界点就是该方程的解.     

类Kirchhoff型方程正解的存在性

本文考虑具有Dirichlet边值条件的非线性Kirchhoff型问题 -(a+bu2dx）Δu=f(x,u),在非线性项f适当的假设条件下给出了该Kirchhoff型问题至少存在一个正解.     

带有临界指数的Kirchhoff型方程正解的存在性简

研究了如下一类带临界非线性项的Kirchhoff型方程:{-(a+b∫_a|▽u|~2dx)Δu=λf(x,u)+u~5 u=0 x∈Ω其中a,b,λ>0,Ω是R~3中的一个有界且带光滑边界的区域.在f没有(AR)条件的假设下,运用Brézis-Lieb引理和山路引理证明了方程至少存在1个正解.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with